Patent section line ruler, stamped "Apps", with trademark and case

Made:: Chemnitz

supplier:: Alfred Apps

Patent section line ruler, stamped "Apps" and with the trade mark of E.O. Richter and case.

Details

Category:: Mathematics

Object Number:: 1911-198

type:: rule (line)

credit:: Thomas H. Court

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Parts

Case for patent section line ruler

Object Number:: 1911-198 Pt1

type:: instrument case

Patent section line ruler

Object Number:: 1911-198 Pt2

type:: rule (line)

Patent section line ruler, stamped "Apps", with trademark and case

Details

Parts

Case for patent section line ruler

Patent section line ruler

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