6" (150mm) Digital Inside Groove Caliper Measurement Micrometer Ruler

As an inspector in a machine shop, the groove calipers owned by the shop are always out! This caliper, while perhaps not durable enough to BE a shop tool, suits my needs perfectly. Considering that foot attachments cost 3x as much, I am happy.

Seems to be well made but comes with no battery or information what kind on battery to use

It was what I expected and it works just fine.

It is good for the price, in general the calipers are a little poor on quality, not to bad but for the price is OK.