USD $69
A robust and beautiful pocket rule combining a white plastic body, and transparent rulers along the upper (metric) and lower (imperial) edges of the rule. Comes with original Aristo leather slip case and instruction sheet.
(14 Scales + 2 rulers)
Front – K, A,[B, BI, CI, C], D, P, S, T
Back – [ L, LL1, LL2, LL3 ]
Stock: 8
USD $85
Aristo pocket rule known for its compact design, that fits right at home in any pocket. Features red and black engraved scales, and an imperial ruler on the upper edge.
Rules do have some scuffing and discoloration.
(9 scales, 3 cursor lines, 1 ruler)
Front – A [B, CI, C] D, K
Back – Blank [S, L, T]
Stock: 2
USD $89
A small and convenient Aristo pocket rule, that features a slightly magnifying cursor, and both metric and imperial rulers. Scales are engraved in red and black.
Cases do vary, and feature embossing from promotional branding.
(10 scales, 2 rulers))
Front – K, A [B, CI, C] D, L
Back – [S, ST, T]
Stock: 4
USD $125
6″/5″ Aristo Studio Pocket Slide Rules
High end log log format rule, with a slightly magnifying cursor, and CF/C and B/C scale yellow color stripes. Self-documenting, two-color scales, including folded, log log, P (pythagorean) and decimal trig scales. Comes with Sphere Research leather clip case.
Despite the high scale density, and small size, the scales are very readable and finely divided. This is one of Aristo’s most advanced pocket rules, and is beautifully designed and built. A wonderful compact log log plastic body pocket rule, very seldom seen in North America, and extremely powerful.
We have a downloadable (zipped-adobe acrobat file) English Studio/Studiolog factory manual HERE
(23 Scales, 4 cursor lines)
Front – ST, T1, T2, DF, [ CF, CIF, CI, C, ] D, P, S
Back – LL01, LL02, LL03, A, [ B, L, K, C, ] D, LL3, LL2, LL1
Stock: 5
USD $89
A rare and unusual rule for electrical engineers that features a secondary cursor built into the slide! Scales are engraved in black and red, self-documenting on the right hand side, which includes the scales that are concealed underneath the main slide.
Faber Castell 52/82 Full Size Duplex (NIB), includes manual and supplementary ruler (in German)
(12Scales, 2 rulers, 1.5 cursors…)
Front – E, A [B, R, C] D, E [V, D/M] + metric ruler
Back – [S, L, T] + imperial ruler
Stock: 1
USD $59
This rule has a plastic body, with filled and engraved black and red scales, with yellow accent stripes on reference scales, plus scales are self-documenting on right hand side. Includes the original fibre-board split case, and support rule with decimal conversions and metric/imperial rulers.
(16 scales, 2/4 cursor lines)
Front – K, DF [CF, CIF, CI, C] D, L
Back – P, A [B, T, ST, S] D, DI
Stock: 1
USD $80
Full Size Aristo Scholar Slide Rule
A beginner rule from Aristo’s Scholar line, and a great starting point for students. This rule has a plastic body, with filled and engraved black and red scales, with yellow accent stripes on reference scales, plus scales are self-documenting on right hand side. This rule also integrates rulers on the upper/lower edges of the body.
Includes the original box, case, and user manuals (English language).
(14 scales, 2/4 cursor lines)
Front – L, K, A [B, CI, C] D, S, ST, T
Back – DF [CF, C] D + 2 rulers
Stock: 2
USD $175
Full Size Aristo Elektro Slide Rule.
This rule has a plastic body, with filled and engraved black and red scales, transparent rulers w/red scales on the upper and lower edges, a 4 line cursor, scales are self-documenting on right hand side. Specifically designed for electrical engineers with two dedicated scales (D/M, V) and additional cursor lines (kW, HP).
Includes the original support rule with conversion factors, and reference data.
(15 scales, 4 cursor lines,2 rulers)
Front – K, A, B [BI, CI, C] D, LL3, LL2, D/M, V
Back – [S, ST, L, T]
Stock: 1
USD $155
12″/10″ Full Size Aristo Elektro Slide Rule.
This rule has a plastic body, with filled and engraved black and red scales, a 4 line cursor, scales are self-documenting on right hand side. Specifically designed for electrical engineers with two dedicated scales (D/M, V) and additional cursor lines (W, HP).
Includes the original support rule with conversion factors, and reference data.
(15 scales, 4 cursor lines,2 rulers)
Front – K, A, B [BI, CI, C] D, LL3, LL2, D/M, V Imperial ruler
Back – [S, ST, L, T] Metric ruler
Stock: 1
USD $85
12″/10″ Full Size Aristo Scholar slide rule
This rule has an engineering plastic body, with filled and engraved black and red scales, with yellow accent stripes on reference scales, and metric/imperial rulers on the reverse side of the rule. A robust, introductory rule from Aristo’s Scholar line, meant for students and beginners.
Includes the original fibreboard split case.
(13 scales, 4 cursor lines)
Front – L, K, A [B, CI, C] D, S, ST, T
Back – [S, LL2, LL3]
Stock: 1
USD $265
12″/10″ Full Size Aristo Geodat Slide Rule
This rule has an engineering plastic body, with filled and engraved black and red scales, with yellow accent stripes on reference scales, plus scales are self-documenting on right hand side.
Comes in the original factory box, plastic split case, support rule, manual, and rule stands.
(20 scales, 2 cursor lines)
Front – ctg, tg, arc, πx [πx, 1/πx, 1/x, x] x, √(1-x^2), sin, cos
Back – 1-cos, 1-cos, x^2 [x^2, 1/tg, sin cos, cos^2] x, lg x, x^3
Stock: 1
USD $245
12″/10″ Full Size Aristo HyperboLog Slide Rule.
This rule has an engineering plastic body, with filled and engraved black and red scales, with yellow accent stripes on reference scales, plus scales are self-documenting on right hand side. Has the Rietz over-range scale extensions, plus anti-skid bottom bumpers, and 5 line cursor. Includes Log Log, folded and DI scales.
Comes in the original factory box, plastic split case, support rule, manual, and rule stands.
(25 scales!, 5 cursor lines)
Front – LL01, LL02, LL03, DF, [CF, CIF, L, CI, C], D, LL3, LL2, LL1
Back – Th, K, A, [B, T, ST, S, C], D, DI, Sh2, Sh1
Stock: 2
USD $215
12″/10″ Full Size Aristo HyperboLog Slide Rule.
This rule has an engineering plastic body, with filled and engraved black and red scales, with yellow accent stripes (a bit faded) on reference scales, plus scales are self-documenting on right hand side. Has the Rietz over-range scale extensions, plus anti-skid bottom bumpers, and 5 line cursor. Includes Log Log, folded and DI scales.
Includes two part fibre board split case.
(25 scales!, 5 cursor lines)
Front – LL01, LL02, LL03, DF, [CF, CIF, L, CI, C], D, LL3, LL2, LL1
Back – Th, K, A, [B, T, ST, S, C], D, DI, Sh2, Sh1
Stock: 2
USD $120
12″/10″ Full Size Aristo Multilog Slide Rule.
One of Aristo’s high end professional rules, very popular in Europe. This rule has a plastic body, with filled and engraved black and red scales, metal end-braces (as opposed to the plastic braces with rubber padded feet), with yellow accent stripes (a bit faded) on reference scales, plus scales are self-documenting on right hand side. Has the Rietz over-range scale extensions, plus anti-skid bottom bumpers, and 6 line cursor. Includes Log Log, folded and DI scales.
These are used rules, with the rules being in very good condition, and the cases being in poor condition (marking, wear, stains, etc).
(24 scales, 6 cursor lines)
Front – LL00, K, A, [ B, T, ST, S, C, ] D, DI, LL0
Back – LL01, LL02, LL03, DF,[ CF, CIF, L, CI, C, ] D, LL3, LL2, LL1
Stock: 3
USD $175
A pocket rule meant for electrical engineers, that features transparent rulers on the upper and lower edges, red/black scales, and two scales specialized scales for electrical engineering. This rule also features metric and imperial rulers on the reverse side, which is an unusual innovation for more complex duplex rules.
(13 scales, 2 cursor lines, 2 rulers)
Front – K, A, B, [BI, CI, C] D, D/M, V
Back – ]S, ST, L, T]
Stock: 1
USD $125
A simple, but powerful, pocket rule from the MultiTrig series, featuring red/black scales, and the standard Aristo yellow accent coloring on the rule body stators. This rule also features metric and imperial rulers on the reverse side, which is an unusual innovation for more complex duplex rules.
(16 Scales, 4 Cursor Lines)
Front – K, DF, [CF, CIF, CI, C] D, L
Back – P, A, [B, T, ST, S, C] D, DI + 2 rulers on upper/lower edge
Stock: 1
USD $125
12″/10″ Full Size Aristo Darmstadt Slide Rule.
One of Aristo’s high end simplex rules, very popular in Europe. This rule has an engineering plastic body, with filled and engraved black and red scales, plus scales are self-documenting on right hand side. Has the Rietz over-range scale extensions, plus 4 line cursor. Includes Log Log, Pythagorean (P) and BI scales.
A classic Aristo design and beautifully thought out rule, all pieces are in excellent condition.
(14 scales, 1 ruler, 4 cursor lines)
Front – cm/ K, A, [ B, BI, CI, C, ] D, P, S, T
Back – [ L, LL3, LL2, LL1 ]
Stock: 6
USD $85
The Model 99 is a more basic student rule designed for beginners and more non-exhaustive use that doesn’t require advanced trig scales. Features engraved and filled black/red scales, an all plastic body, and four cursor lines.
(10 Scales, 4 Cursor Lines, 2 rulers)
Front – K, A, [B, CI, C] D, L, imperial ruler
Back – [S, ST, T], metric ruler
Stock: 2
USD $110
A spectacularly well designed rule for commerce and accounting. Featuring red/black scales, anti-slip rubber feet on the reverse side, and red-scaled transparent rulers on the upper and lower edges.
Includes case, manual, and support rule (Aristo 1361) with conversion factors.
(14 Scales)
Front – KZ, T2, [P2, P1, T1, Z] M, £, s/d
Back – [ZZ3, ZZ2, ZZ1, ZZ%, T1]
Stock: 3
USD $149
12″/10″ Full Size Aristo Multilog Slide Rule.
One of Aristo’s high end professional rules, very popular in Europe. This rule has an engineering plastic body, with filled and engraved black and red scales, with yellow accent stripes (a bit faded) on reference scales, plus scales are self-documenting on right hand side. Has the Rietz over-range scale extensions, plus anti-skid bottom bumpers, and 6 line cursor. Includes Log Log, folded and DI scales.
A classic Aristo design and beautifully thought out rule.
(Incredible 24 scales! 6 cursor lines)
Front – LL00, K, A, [ B, T, ST, S, C, ] D, DI, LL0
Back – LL01, LL02, LL03, DF,[ CF, CIF, L, CI, C, ] D, LL3, LL2, LL1
Stock: 1
USD $85
Later production example of this advance MultiTrig rule, featuring red/black scales, and the standard Aristo yellow accent coloring on the rule body stators that run the full length of the rue rule. This example does not feature the rubber stand-off feet on either side, but does include two support rules featuring metric and imperial rulers, and conversion factors.
(17 Scales + 4 Cursor Lines)
Front – K, DF, [CF, CIF, CI, C] D, L
Back – P, A, [B, T, ST, S, C] D, DI
Stock: 1
USD $75
An excellent example of the MultiTrig series, featuring red/black scales, rubber stand-off feet on both sides, and the standard Aristo yellow accent coloring on the rule body stators.
Includes a set of Aristo slide rule stands. A very functional and attractive full size rule for advanced users.
(17 Scales + 4 Cursor Lines)
Front – K, DF, [CF, CIF, CI, C] D, L
Back – P, A, [B, T, ST, S, C] D, DI
Stock: 1
USD $210
NEW, Factory Boxed Set, including box, case, rule, and manual (English). The rule has a 4 line cursor, plus two color (red/black) scale markings with yellow accent coloring on the rule body stators. A very functional and attractive full size rule for advanced users.
(23 Scales + 4 Cursor Lines)
Front – ST, T1, T2, DF, [CF, CIF, CI, C], D, P, S
Back – LL01, LL02, LL03, A, [B, L, K, C] D, LL3, LL2, LL1
Stock: 8
USD $65
6″/5″ Scholar Slide Rule
NEW, Factory Boxed Set Excellent pocket Trig rule set with leather case. The rule has a 4 line slightly magnifying cursor, plus two color (red/black) scale markings with yellow accent coloring on the rule body stators. Self-documenting on the right hand side. A very functional and attractive trig rule set. The back is blank. Includes box, leather case, inspection tag, original manual (Spanish) and we include an English reprint.
(10 Scales + 4 Cursor Lines)
Front – L, K, A, [ B, CI, C, ] D, S, ST, T
Back – BLANK
Stock: 43
USD $49
This unusual Aristo rule is used for calculating thermal radiation based on the absolute temperature of a black body and its total radiation. Includes the original instructions (in German).
Stock: 1
USD $310
5.5″ Circular Aviation Slide Rule
Constructed with one rotating film disk, and rotating cursor on each side. A very sophisticated and beautiful flight computer for doing altitude, pressure, wind drift, time, temperature, and fuel problems. The 617 features an additional rotating wind arrow on the back face, not present on other models.
The rule gives simultaneous solutions in both metric and US/Imperial units, without being cluttered or hard to interpret, an outstanding mechanical and artistic design. Still in demand today among many pilots, but very hard to find.
Made of ‘Aristopal’, comes complete with zippered leather pouch. Comes with the original English manual and leather case (case has some wear and seam pulling).
(22 scales on front, Wind scales on rear)
Stock: 1
USD $85
This is a very minimalist circular pocket rule that looks to have only three scales, with a concentrically mounted rotating scale and adjustable cursor. Appears to be for doing multiplication and division, as well as percentages.
Stock: 1
USD $265
5.5″ Circular Aviation Slide Rule
Constructed with one rotating film disk, and rotating cursor on each side. A very sophisticated and beautiful flight computer for doing altitude, pressure, time, temperature, and fuel problems.
The rule give simultaneous solutions in both metric and US/Imperial units, without being cluttered or hard to interpret, an outstanding mechanical and artistic design. Still in demand today among many pilots, but very hard to find.
Made of ‘Aristopal’, comes complete with zippered leather pouch, reprint English manual, and original German manual.
Stock: 1
USD $245
5.5″ Circular Aviation Slide Rule
Constructed with one rotating film disk, and rotating cursor on each side. A very sophisticated and beautiful flight computer for doing altitude, pressure, wind drift, time, temperature, and fuel problems. The 617 features an additional rotating wind arrow on the back face, not present on other models.
The rule gives simultaneous solutions in both metric and US/Imperial units, without being cluttered or hard to interpret, an outstanding mechanical and artistic design. Still in demand today among many pilots, but very hard to find.
Made of ‘Aristopal’, comes complete with zippered leather pouch. Comes with an English manual reprint, and original German language manual.
(22 scales on front, Wind scales on rear)
Stock: 1
USD $285
5.5″ Circular Aviation Slide Rule
Constructed with one rotating film disk, and rotating cursor on each side. A very sophisticated and beautiful flight computer for doing altitude, pressure, wind drift, time, temperature, and fuel problems.
The rule gives simultaneous solutions in both metric and US/Imperial units, without being cluttered or hard to interpret, an outstanding mechanical and artistic design. Still in demand today among many pilots, but very hard to find.
Made of ‘Aristopal’, comes complete with zippered leather pouch. This rule is in excellent condition, and the case is in fair condition (some scuffs/marking). The similar 617 has an additional rotating wind arrow on the back face, not present on these models. Comes with an English manual reprint, and original German manual.
(22 scales on front, Wind scales on rear)
Stock: 1
USD $49
12″/10″ Scholar Slide Rule
NEW factory boxed sets, with 2 part plastic case, 100 Year Anniversary boxes, and even the inspection slip inside. The rule has a 4 line slightly magnifying cursor, plus two color (red/black) scale markings and scales are self-documenting on the right hand side. A very functional and attractive trig rule set, with a bonus top edge cm ruler. The back is blank, but the slide reverse has S, ST and T trig scales.. Includes box, 2-part case, and basic English reprint, because manuals were not included.
(10 Scales + cm Ruler)
Front – cm/ A, [ B, CI, C, ] D, L, K
Back – [ S, ST, T ]
Stock: 6
USD $65
An excellent student and beginner simplex/Manheim rule, featuring Aristo’s yellow contrast scales, and and black and red scale markings. Comes with case, rule, and manual. Rules are in new condition.
(8 Scales, 4 cursor lines)
Front – DF, [CF, CIF, CI, C], D, A, K
Back – Blank
Stock: 6
USD $79
A slightly more advanced beginner rule with more scales and cursor marking (featuring Aristo’s yellow contrast scales, and red/black scale markings), despite being a simplex/Manheim rule this is still a very capable rule. Includes the original case, signs of wear on some of the scales, age discoloration.
(13 Scales, 4 cursor lines)
Front – L, K, A, [B, CI, C], D, S, ST, T
Back – [ S, LL2, LL3], rulers
Stock: 3
USD $89
A slightly more advanced beginner rule with more scales and cursor marking (featuring Aristo’s yellow contrast scales, and red/black scale markings), despite being a simplex/Manheim rule this is still a very capable rule. Includes the original factory box in good condition, case, and manual. New in box rule.
(13 Scales, 4 cursor lines)
Front – L, K, A, [B, CI, C], D, S, ST, T
Back – [ S, LL2, LL3]
Stock: 2
USD $75
An excellent student and beginner simplex/Manheim rule, featuring Aristo’s yellow contrast scales, and and black and red scale markings. Comes in the original factory box still in excellent condition, case, rule, manual, and warranty card. new in box rule.
(8 Scales, 4 cursor lines)
Front – DF, [CF, CIF, CI, C], D, A, K
Back – Blank
Stock: 1
USD $195
12″/10″ Full Size Aristo HyperboLog Slide Rule.
This rule has an engineering plastic body, with filled and engraved black and red scales, with yellow accent stripes (a bit faded) on reference scales, plus scales are self-documenting on right hand side. Has the Rietz over-range scale extensions, plus anti-skid bottom bumpers, and 5 line cursor. Includes Log Log, folded and DI scales.
Includes two part plastic case that has been enclosed with some form of protective cover, and original support guide.
(25 scales!, 5 cursor lines)
Front – LL01, LL02, LL03, DF, [CF, CIF, L, CI, C], D, LL3, LL2, LL1
Back – Th, K, A, [B, T, ST, S, C], D, DI, Sh2, Sh1
Stock: 1
USD $169
12″/10″ Full Size Aristo Multilog Slide Rule.
One of Aristo’s high end professional rules, very popular in Europe. This rule has an engineering plastic body, with filled and engraved black and red scales, yellow accent stripes on reference scales, plus scales are self-documenting on right hand side. Has the Rietz over-range scale extensions, plus anti-skid bottom bumpers, and 6 line cursor. Includes Log Log, folded and DI scales. Comes with
Set includes the rule, original leather case (some warping and drying in the leather), and instruction manual.
(24 Scales)
Front – LL00, K, A, [ B, T, ST, S, C, ] D, DI, LL0
Back – LL01, LL02, LL03, DF,[ CF, CIF, L, CI, C, ] D, LL3, LL2, LL1
Stock: 2
USD $69
A robust and beautiful pocket rule combining a white plastic body, and transparent rulers along the upper (metric) and lower (imperial) edges of the rule. This specific rule was produced for Grace & Davison Chemical, and includes the original branded case.
(14 Scales + 2 rulers)
Front – K, A,[B, BI, CI, C], D, P, S, T
Back – [ L, LL1, LL2, LL3 ]
Stock: 1
USD $69
11 scale full-size rule, with original instruction manual. Some writing on reverse side of rule, but otherwise in excellent condition.
(11 scales)
Front – L, K, A, B, DI, CI, C, D, S, ST, T
Back – Blank
Stock: 3
USD $215
Comprehensive rule with 25 scales, in excellent condition.
( 25 Scales, 6 cursor lines)
Front – Th, K, A, B, T, ST, S, C, D, DI, SH2, SH1
Back – LL01, LL02, LL03, DF, CF, CIF, L, CI, C, D, LL3, LL2, LL1
Stock: 1
USD $125
5.5″ Circular Aviation Slide Rule
Constructed with one rotating film disk, and rotating cursor on each side. A very sophisticated and beautiful flight computer for doing altitude, pressure, wind drift, time, temperature, and fuel problems.
The rule gives simultaneous solutions in both metric and US/Imperial units, without being cluttered or hard to interpret, an outstanding mechanical and artistic design. Still in demand today among many pilots, but very hard to find.
Made of ‘Aristopal’, comes complete with zippered leather pouch. We have had many requests for this rule from all over the world, this set is in very good condtion, except for a few case scuffs.
Stock: 1
USD $275
5.5″ Circular Aviation Slide Rule
Constructed with one rotating film disk, and rotating cursor on each side. A very sophisticated and beautiful flight computer for doing altitude, pressure, wind drift, time, temperature, and fuel problems.
The rule gives simultaneous solutions in both metric and US/Imperial units, without being cluttered or hard to interpret, an outstanding mechanical and artistic design. Still in demand today among many pilots, but very hard to find.
Made of ‘Aristopal’, comes complete with zippered leather pouch. We have had many requests for this rule from all over the world, this are the first 618’s we have ever had available for sale, all in excellent condition. The similar 617 has an additional rotating wind arrow on the back face, not present on these models. The earlier 616 does not have the red reciprocal degrees printed on the rear compass rose, or the wind arrow.
(22 scales on front, Wind scales on rear)
Stock: 1
USD $255
5.5″ Circular Aviation Slide Rule
Constructed with one rotating film disk, and rotating cursor on each side. A very sophisticated and beautiful flight computer for doing altitude, pressure, time, temperature, and fuel problems.
The rule give simultaneous solutions in both metric and US/Imperial units, without being cluttered or hard to interpret, an outstanding mechanical and artistic design. Still in demand today among many pilots, but very hard to find.
Made of ‘Aristopal’, comes complete with zippered leather pouch.
Stock: 1
USD $120
Aristo / Charvoz – MultiLog 0970 Full Size
(24 Scales, 5 Cursor Lines)
Front – LL01, LL02, LL03, DF, CF, CIF, L, CI, C, C, LL3, LL2, LL1
Back – LL00, K, A, B, T, ST, S, C, D, DI, LL0
Stock: 2
USD $49
This is an advance 24 scale rule, that features feet on both sides of the rule for easy desktop use, and a cursor with 6 markers. As with most Aristo rules, it comes with black and red scales, as well as yellow bands on the slide for easier reading.
This rule has pronounced discoloration on both sides, but is still in very usable condition.
Scales include:
Front – LL01, LL02, LL03, DF, CF, CIF, L, CI, C, D, LL3, LL2, LL1
Reverse – LL00, K, A, B, T, ST, S, C, D, DI, LL0
Stock: 1
USD $69
This single sided rule is suitable for the mathematician on the go and features clear plastic edging on the upper and lower ruler edges with imperial and metric rulers.
Available with either Grace Davison case or the Sphere clip case.
Scales include:
Front – X, XZ, X2, X3, X 2/Z, 1/X, SIN, TG, ROOT (1-X2), LGX, E^X, E^0.1X, E^0.01X
Back – Blank
Stock: 1
Sphere Research Corporation