spherometer
sphe·ro·me·ter
noun
1.
a measuring instrument for measuring the curvature of a surface
Origin
From sphero- + -meter.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.