I have used alot of calipers over the yrs starting with old dial calipers.
My favorite over Starrett is Mitutoyo Coolent Proof Absolute. They also turn off automatically.
They are the best caliper and longest lasting caliper I've ever used, as a professional machinist.
Calipers are reference tools used mainly where measurements are not critical.
Like a reloading hobbyist with COAL measurements.
Modern inspection departments do not have a caliper in the room,...nothing would be certified, as past inspection with a caliper today.
Or even the more accurate micrometer for that matter, is not used.
The CNC machining centers have to be qualified before putting them into production, to see if they are accurate enough to machine the parts they are intended to machine.
Today, this is not done with out dated calipers or micrometers.
But that doesn’t mean ya can't do very accurate work with old outdated machines and measuring devices.
It's what built your rockets and nuclear weapons.
But with modern technology and Mars on the horizon, everything we do is outdated.
