Whitworth Caliper Case

There are a lot of variations of calipers, so print a short slice for fit before committing. My calipers say Whitworth on the back, but they were fairly inexpensive and that brand doesn't seem to be googleable.

Designed to friction hold 2 LR44 batteries.  The edge is exposed on the inside of the case so you can roll one out when you need it, but it won't fall out if case inverted.  The optional lid has some extra extrusion to hold the calipers firmly when in travel. For anyone interested in improving this, the lid sides could probably be 1 mm narrower.  If I get time I'll try a different iteration where the lid is held in place internally, so the lid only adds a little height and no width.