USD $220
Gilson’s most famous aluminum circular slide rule, with alternating yellow/white stripes and fractional converter/operator scales. This rule was made by Gilson in Florida but was often sold by numerous other companies, including POST, Dietzgen, Tavella, Bruning and others.
This is a very powerful rule, with 3 sets of trig scales (sin/tan), giving performance equal to a much larger straight rule, and still has the original printed manual.
The rule has unique fractional ‘binary’ scales that permit operations directly with fractional numbers, and also drill size scales. Cases for these rules were made of random fabric materials at the factory, and each one is a bit different.
(21 Scales)
Front – C, CI, A, K, L, Log Log (1.0015-1,000,000), fractions, fractions, drill/thread, mm
Back – degrees, sines, tans, degrees, sines, tans, degrees, sines, tans, Fractional Conversions
Stock: 220
USD $249
Gilson’s most famous aluminum circular slide rule, with alternating yellow/white stripes and fractional converter/operator scales. This rule was made by Gilson in Florida but was often sold by numerous other companies, including POST, Dietzgen, Tavella, Bruning and others.
This is a very powerful rule, with 3 sets of trig scales (sin/tan), giving performance equal to a much larger straight rule, and still has the original printed manual.
The rule has unique fractional ‘binary’ scales that permit operations directly with fractional numbers, and also drill size scales. Cases for these rules were made of random fabric materials at the factory, and each one is a bit different.
(21 Scales)
Front – C, CI, A, K, L, Log Log (1.0015-1,000,000), fractions, fractions, drill/thread, mm
Back – degrees, sines, tans, degrees, sines, tans, degrees, sines, tans, Fractional Conversions
Stock: 4
USD $249
Gilson’s most famous aluminum circular slide rule, with alternating yellow/white stripes and fractional converter/operator scales. This rule was made by Gilson in Florida but was often sold by numerous other companies, including POST, Dietzgen, Tavella, Bruning and others.
This is a very powerful rule, with 3 sets of trig scales (sin/tan), giving performance equal to a much larger straight rule, and still has the original printed manual.
The rule has unique fractional ‘binary’ scales that permit operations directly with fractional numbers, and also drill size scales. Cases for these rules were made of random fabric materials at the factory, and each one is a bit different.
(21 Scales)
Front – C, CI, A, K, L, Log Log (1.0015-1,000,000), fractions, fractions, drill/thread, mm
Back – degrees, sines, tans, degrees, sines, tans, degrees, sines, tans, Fractional Conversions
Stock: 7
USD $75
Dietzgen Reliance Drafting Set (Good condition), box damaged, minimal corrosion.
Stock: 1
USD $135
This planimeter is good condition, due to the glass on the main readout being cracked, but is otherwise extremely well cared for. Comes in the original velvet lined case and packed with shipping cotton. Includes all original pieces and instructions.
Stock: 1
USD $179
An early model Dietzgen LogLog slide rule, featuring wood body construction with adjustable metal end braces, metal framed cursor, and red/black engraved scale markings. Some wear to the end braces, but an excellent example of this rule.
(22 Scales)
Front -LL01, K, A [B, T>45, T<45, ST, S] D, DI, LL1
Back – LL02, LL03, DF [CF, CIF, L, CI, C] D, LL3, LL2
Stock: 1
USD $35
Convenient an easy to use trigonometric slide charts for solving a variety of volume and area equations.
Stock: 1
USD $175
Gilson’s most famous aluminum circular slide rule, with alternating yellow/white stripes and fractional converter/operator scales. This rule was made by Gilson in Florida but was also sold by numerous other companies, this is the Dietzgen version (slightly green tinted). This is a very powerful rule, with 3 sets of trig scales (sin/tan), giving performance equal to a much larger straight rule, and still has the factory box, and original printed manual.
The rule has unique fractional ‘binary’ scales that permit operations directly with fractional numbers, and also drill size scales. Rotating dual cursors with a slip clutch on one side, and a single cursor on the other.
(21 Scales !)
Front – C, CI, A, K, L, Log Log (1.0015-1,000,000), fractions, fractions, drill/thread, mm
Back – degrees, sines, tans, degrees, sines, tans, degrees, sines, tans, Fractional Conversions
Stock: 2
USD $175
Gilson’s most famous aluminum circular slide rule, with alternating yellow/white stripes and fractional converter/operator scales. This rule was made by Gilson in Florida but was also sold by numerous other companies, this is the Dietzgen version (slightly green tinted). This is a very powerful rule, with 3 sets of trig scales (sin/tan), giving performance equal to a much larger straight rule, and still has the factory box, and original printed manual.
The rule has unique fractional ‘binary’ scales that permit operations directly with fractional numbers, and also drill size scales. Rotating dual cursors with a slip clutch on one side, and a single cursor on the other.
(21 Scales)
Front – C, CI, A, K, L, Log Log (1.0015-1,000,000), fractions, fractions, drill/thread, mm
Back – degrees, sines, tans, degrees, sines, tans, degrees, sines, tans, Fractional Conversions
Stock: 1
USD $75
A beginner Manheim/simplex rule, full plastic body and cursor. Includes a plastic slip case.
(9 scales)
Front – S, K, A, [B, CI, C], D, L, T
Back – Blank
Stock: 3
USD $49
An entry level rule good for students, single sided with contrasting mint green slide. Rule is new and in original packaging, with user manual.
(9 Scales)
Front -K, S, A, B, CI, C, D, T, L
Back – Blank
Stock: 5
USD $85
This is an unusual Dietzgen pocket rule that is all metal. Case in extremely poor condition, with some marking on the back.
(8 scales, 1 ruler)
Front – K, A, B, CI, C, D [S, T]
Back – Blank
Stock: 1
USD $59
Dietzgen Microglide Vector Type Log Log Instruction Manual
Stock: 1
USD $249
This is a very rare 4″ pocket circular rule, that comes with both the original factory box and manual in very good condition.
Scales include: A, C, CI, Log, Log-Log, Binary, S,
Stock: 1
USD $40
Still in good condition, this rule has no scale bleeding and moves smoothly. Features imperial and metric rulers on the upperand lower edges of the rule, back features standard unit conversions.
Scales include:
Front – A, B, C, D, K, CI, S, L, T
Back – Unit conversion chart
Stock: 1
Sphere Research Corporation