细节
A Young's Revolving Measure
with nickel frame and wheel measuring four inches per revolution, fretted ivorine front and back to mechanism with aperture for readings -- 4¼in. (10.5cm.) long, signed Louis Young's Revolving Measure Patent Nov. 20th 1855, in case
with nickel frame and wheel measuring four inches per revolution, fretted ivorine front and back to mechanism with aperture for readings -- 4¼in. (10.5cm.) long, signed Louis Young's Revolving Measure Patent Nov. 20th 1855, in case
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