![](https://coimages.sciencemuseumgroup.org.uk/74/294/medium_thumbnail_1990_0459__0002_.jpg)
![Ready reckoner for drilling calculations, plastic](https://coimages.sciencemuseumgroup.org.uk/325/645/medium_smg00048278.jpg)
Ready reckoner for drilling calculations, plastic, by Raboma-Maschinenfabrik, Berlin Borsigwalde
Details
- Category:
- Mathematics
- Object Number:
- 1990-701
- Materials:
- plastic
- Measurements:
-
overall: 4 x 150 x 85 mm
- credit:
- Auction Team Koln