firm-joint caliper

firm-joint caliper

[′fərm ‚jȯint ′kal·ə·pər]
(design engineering)
An outside or inside caliper whose legs are jointed together at the top with a nut and which must be opened and closed by hand pressure.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.