OPISOMETER

OPISOMETER

Stock Number: S14

$75

OPISOMETER, French for the English market, c. early 20th century, "Depose H C," 4-5/8" (12 cm) long, plated, "Inches to Miles or Verstes" and "Centimetres to Kilometres," very fine.

Dimensions

4-5/8 inches (12 cm) long

Circa

c. early 20th century

Country of manufacture

France

Categories: Calculating, Surveying Instruments & Mining

Description

OPISOMETER, French for the English market, c. early 20th century, “Depose H C,” 4-5/8″ (12 cm) long, plated, “Inches to Miles or Verstes” and “Centimetres to Kilometres,” very fine. 

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US TESSERACT

David and Yola Coffeen both have enjoyed academic careers, as planetary astronomer and as linguist/educator. But since 1982 (yes, 1982!) they have been full-time dealers in early scientific and medical instruments, under the name Tesseract. Selling primarily by catalogue (over 100 issued so far) they also have a web presence at www.etesseract.com, and can be contacted at [email protected].

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