Hemmi 255 Greg's Slide Rules
Front Left

Front Right

Back Left

Back Right

Hemmi 255 - Notes

  1. This rule was advertised in the Hemmi catalogues as being for Electrical Engineering. It has conversion of angle, hyperbolic function and vector scales.


Further details about this Slide Rule:

Brand Hemmi
Model 255 - Electrical Engineering
Country of Manufacture Japan
Date of Manufacture Date code JF - 1959, June
Scales Front L, K, DF [CF, CIF, CI, C] D, LL3, LL2, LL1
Scales Back Sh1, Sh2, Th, A [B, TI2, TI2, SI, C] D, Χ, √
Number of Scales 23
Slide Rule Materials Bamboo/Celluloid
Cursor Materials Metal/Glass
Cursor Lines 1 Front, 1 Back
Scale Length 25 cm
Length 32 cm
Width 45 cm
Condition Good
Documentation None
Accessories Leather Case

Last updated: 2004-08-22 23:30 AEST
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Copyright 2002-2004. All rights reserved. Contact: Greg