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 $165
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 $75
6″/5″ Aristo Studio Pocket Slide Rules
NIB high end log log format rule, and original inspection certificate. Has a slightly magnifying 6 line cursor, CF/C and B/C scale yellow color stripes. Self-documenting, two-color scales, including folded, log log, P (pythagorean) and decimal trig scales.
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.
(Incredible 23 Scales!)
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: 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 $30
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.
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