Brass folding graduated conversion rule

Made:
1798-1803 in France

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Brass folding conversion rule graduated with scales for 12 3/4 French inches and 25 centimetres, c.1800.

Details

Category:
Weighing & Measuring
Object Number:
1997-1861
Measurements:
open: 2.5 x 325 x 12 mm
closed: 2.5 x 165 x 12 mm
type:
folding rule
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
  • ruler - measuring device
credit:
Tesseract