EDC Wrench Calipers (Metric)

Update : 09/22/2025

Hello Everyone I just improved this previous caliper by incorperating metal screws to strenghten and make the caliper more robust and slilm. 

New Design : https://makerworld.com/en/models/1813495-edc-calipers-mm-wrench-m4#profileId-1934948

This is the update to a previous caliper design I uploded found Here : https://makerworld.com/en/models/1310855-edc-calipers-metric#profileId-1345110. 

This previous model worked but I felt that it needed more functionallity as it had no way to retain the caliper apart from friction. Eventually I landed on this design that trades the fast deployment of the previous model for added regididy and security with the opening mechanisim. Thus this vesion was named the Wrench version. As with most of my designs this design also features keyring hols that function as a 4 mm bit wrench. 

NOTE : This model is not a big caliper and mainly useful for sub 35 mm mesurments. For me this works out perfectly as most of my measuring fall below this range. I havent yet tested this design as a wrench but the clamping force is pretty strong. 

To assemble the wrench calipers simply insert the nut in the side slot of the body and align it with the top and bottom through holes. Then simply inset the caliper head through the top hole and align it with the nut. After that just simply tighten the nut by rotating it to the right side moving the caliper head down into the body closing the calipers. To open the calipers simply turn the nut left to loosen the hold. 

NOTE : Keep in mind that the layerlines are directly in the line of loading and will break if you apply too much toque when unloading a bolt head or nut. 

NOTE : If you wish to sacrifice the readability of the caliper portion to increase the wrench strength you can lay the caliper head flat on the build plate

If you like this model and the explantion behind it please leave a comment and like to boost the algorithm, Thanks :)