Cylindrical slide rules

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Loga 2.4 m

LOGA cylindrical slide rule (ca. 1930), Cylinder size: Length = 320 mm, Diam = 63 mm, with the accuracy of a 2.4 meter long slide rule.

D Scale length: 15000 mm. Significant digits: 4.8 to 5.

Copyright 2012, Dave Hoyer.