Herrmann's circular slide rule
Herrmann's circular slide rule No.159 by Wiesenthal & Cie
Details
- Category:
- Mathematics
- Object Number:
- 1972-258
- Materials:
- glass, brass (copper, zinc alloy), steel (metal), iron and paper (fibre product)
- Measurements:
-
overall: 138 mm x 140 mm x 184 mm, 155 mm, 1.212 kg
- type:
- circular slide rule
- credit:
- Mr Peter Delehar