FOWLER'S CIRCULAR SLIDE RULE CALCULATORS

The model numbers associated with each of these Fowler Calculators are taken from the article "The Fowler Calculators - a Catalogue Raisonne" published in the "Journal of the Oughtred Society," Vol. No. 2, Fall, 2002.

09-010A. 4 5/8" 'JUBILEE MAGNUM' EXTRA LONG SCALE (Model 4MTG2)

•13 circles: "Short Scale", Reciprocals, Logarithms, "Long Scale" (10 circles)

Price...................................................SOLD

09-010B. 4 5/8" 'MAGNUM' LONG SCALE (Model 4MTG1)

•14 circles: "Short Scale", Reciprocals, Square Roots (2 circles), "Long Scale" (6 circles), Logarithms, Sines (5°45'-90°), Sines (35'-5°45'), Tangents (5°45'-45°)

Price...................................................SOLD

09-010C. 3 3/8" UNIVERSAL (Model 3MG1)

•9 circles: "Short Scale", Reciprocals, Logarithms, Cubes and Cube-Roots (3 circles), Sines (5°45'-90°), Sines (35'-5°45'), Tangents (5°45'-45°)

Price...................................................$250

09-010D. 3 3/8" 'TWELVE-TEN' (Model 3MTG2)

•7 circles: "Tenths", Reciprocals, "Twelfths" (10-100), "Twelfths" (1-10), Sines (6°-90°), Sines (35'-6°), Tangents (6°-45°)

Price...................................................$275

09-010E. 2 1/2" LONG SCALE (Model 2MG2)

•7 circles (front): "Short Scale", Long Scale (6 circles)
•8 circles (back): "Short Scale", Reciprocals, Logarithms, Square Roots (2 circles), Log Sines (5°45'-90°), Log Tangents (5°45'-45°), Log Sines (35'-5°45')

Price...................................................SOLD

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