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2199 - Alpha No. 4028 Circular Slide Rule (circa 1970?)

ID:

2199

Maker's Name:

Concise Co. Ltd, Japan

Where made:

Japan

circa 1970?

Dimensions:

8.1 × 7.9 × 0.6 cm

General purpose circular slide rule in plastic from Japan.

Hyperlinks:

Scan of manual at sliderulemuseum.com