Ivory single helix specimen
Ivory single helix specimen made with turning lathe
Details
- Category:
- Hand and Machine Tools
- Object Number:
- 1928-1162/4
- Materials:
- ivory
- Measurements:
-
overall: 71 mm x 20 mm, 0.026 kg
- type:
- specimen
- credit:
- Holtzapffel and Company