Linear slide rules

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Sun Hemmi Student 1447 (Hughes-Owen)

Sun Hemmi Japan Student 1447 slide rule. It's a nice simple utilitarian slide rule in great condition. Slide Rule is marked "Sun Hemmi Japan Student Slide Rule Hughes Owens Since 1900".

D Scale length: 250 mm. Significant digits: 3 to 4.


Copyright 2012, Dave Hoyer.