![](https://coimages.sciencemuseumgroup.org.uk/74/294/medium_thumbnail_1990_0459__0002_.jpg)
Ready reckoner for screw threads
- Made:
- Germany
![Ready reckoner for screw threads, German, metal](https://coimages.sciencemuseumgroup.org.uk/325/636/medium_smg00048269.jpg)
Ready reckoner for screw threads, German, metal, by or for Dinorm
Details
- Category:
- Mathematics
- Object Number:
- 1990-702
- Materials:
- brass
- Measurements:
-
overall: 3 x 250 x 50 mm
- credit:
- Auction Team Koln