Designed to fit an Ikea galant desk locker's top drawer, which is very shallow.

25 mm high and 5x2 Gridfinity units.

Place to put spare LR44 batteries, but I suggest you hack it so the cover becomes a sliding on-off switch and save batteries: [https://www.instructables.com/Digital-Caliper-Battery-Cover-Switch/](https://www.instructables.com/Digital-Caliper-Battery-Cover-Switch/)

Also in the photo is a design for a cheap amazon multi-bit screwdriver.