Enlarge Text
  1. nwkupl
  2. Technology
  3. Saturday, 26 October 2013
  4.  Subscribe via email
It's the diameter of a pocket watch, with a thickness of 3/4". Used in the rubber industry to check the density of rubber sheets.
There are no comments made yet.

There are no replies made for this post yet.
However, you are not allowed to reply to this post.

Get The Latest Collecting News Every Week for FREE!

Enter your email below to receive Kovels Komments for the latest antiques & collectibles news, answers to readers questions, marks and tips. In your inbox every Wednesday.

You can unsubscribe at any time. Please refer to our Privacy Policy or Contact us for more information.
Kovels Premium