1) Measuring instrument
Found on
https://www.crosswordclues.com/clue/bettsometer
A Bettsometer is a fabric degradation tester commonly used to measure or test the integrity of fabric coverings (and associated stitching) on aircraft and their wings. The Bettsometer comprises a pen-like instrument (which functions much like a spring balance) and a smooth round needle or pin. The needle is inserted into the fabric and then the in...
Found on
http://en.wikipedia.org/wiki/Bettsometer
No exact match found.
