Folding arm protractor
Folding arm protractor, 6 inch; brass, divided in half degrees on silver, reading by vernier to one minute of arc. Distance between points about 12 inches
Details
- Category:
- Mathematics
- Object Number:
- 1876-641
- Materials:
- brass and scale, silver
- type:
- drawing instruments and folding arm protractors
- credit:
- W.F. Stanley and Company
