Calipers groove and thread measuring jaw extension

Adapters that snap on regular 1/8" thick caliper jaws to allow measurement of thin features. 

Groove and thread depth measuments while machining.

Works better with digital calipers due to their zero function, install, calibrate the new zero and measure your features. Install on both jaws for measusing diameters or on a single jaw to measure relative depths.

The accuracy will depend on your printer's capabilities and consistency along z-axis. Should work great in resin printers.

One could also re-finish the contact edges by milling, sanding or slightly heating the contact edges and pressing them against a clean caliper jaw while installed.

Printed in PETG, 0.4 mm nozzle and 0.2 mm layers.