Vintage J. Hemmi "Sun" Brand Bamboo Slide Rule with Leather Case

A specialized, celluloid-laminated bamboo slide rule designed for electrical engineers, complete with its original brown leather slip case. Crafted in Japan with high-precision markings and smooth action.

• Brand & Origin: J. Hemmi "Sun" (Japan) | Patent No. 22129

• Front Scales: A, B, C, D

• Slide Reverse Scales: S, L, T

• Well Scales: Dynamo and Motor efficiency scales

• Reverse Side: Conversion tables for "Weights of Metals" & "Decimal Equivalent"

• Condition: Excellent vintage condition. Glass cursor is intact with no cracks. Celluloid and bamboo surfaces are bright. Slide movement is very smooth.

• Included Case: Original brown leather slip case with working snap fastener (subtly embossed "R.B.B.")

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