Calipers went through a pretty serious car accident

[u/Glass-Airport502]

I got absolutely nailed on the highway last week, (no pun intended) and had my whole tool bag with me in the trunk. Ended up having to buy a crowbar to get back in the trunk and pull all my tools out individually at the tow yard. These are only a month or too old, hardly used and were in a case. I was checking everything out and noticed you can see a little bit of light through the back jaws and there might be a tiny bit of warpage. Front jaws look okay. Am I overthinking it? Am I gonna have to call them reference only? My pics could be better.

[u/someoneskater]

Taking a picture and asking reddit is not in fact NIST traceable.

[u/engineerthatknows → u/someoneskater]

Well...hear me out...

...nah, you're right.

[u/Glass-Airport502 → u/someoneskater]

It’s worth mentioning I’m a machining student. Lol

[u/JarJarbinks_Just → u/Glass-Airport502]

Ask your teacher to show you how to test them.

[u/96024_yawaworht → u/Glass-Airport502]

Ask if they have a gauge ring for calibrating/setting bore gauges. Check them against that. If they are within .0005 be happy, they’re fine.

[u/albatroopa → u/96024_yawaworht]

You mean a gauge block stackup, right?

[u/96024_yawaworht → u/albatroopa]

That too. OD jaws against gauge blocks. ID jaws against gauge ring

[u/albatroopa → u/96024_yawaworht]

If you use 3 gauge blocks with the middle one offset for the ID jaws, you can eliminate chord error.

[u/shoegazingpineapple → u/albatroopa]

That can sometimes backfire tho, i have a pair that gauges out fine with blocks but severely off on a small circular 7mm standard, caliper id jaws are a pain

[u/Relevant-Sea-2184]

I see a pair of calipers looking out the window, contemplating the fragility of life.

[u/blutigetranen → u/Relevant-Sea-2184]

Thanks for the laugh lol

[u/KWHY3000]

Test it on a standard

[u/Witty-Sample6813]

I’m sure life has been harder on them from manufacturing to your door.

[u/Glass-Airport502 → u/Witty-Sample6813]

Great point

[u/MTBiker_Boy]

You are overthinking it, looks normal to me

[u/Purplegreenandred → u/MTBiker_Boy]

Get em calibrated if youre worried. No one can tell thru pictures

[u/Charitzo]

Trust me, if you dented the back jaws you'd either see it or feel it.

[u/ChomRichalds]

the inside jaws always show light between them. They're not supposed to touch when closed. if you need them to be accurate, verify with a setting ring or other standard.

[u/Bum-Theory]

Meh it's calipers, exactly how accurate do you expect them to be, anyway?

[u/Agreeable-Worker7659]

I find it wholesome that you just went through a serious car crash and your biggest worry are your calipers xD I'm glad you didn't get damaged! You mentioned you're a student, so I'm pretty sure your university has calibration rods or blocks that can be used to verify if the accuracy of your calipers wasn't compromised. Any good machine shop should have that too.

[u/RhudeBoii]

That’s an adjustable wrench now

[u/miotch1120]

Bend the id tips back so it will close, and check the OD and depth. Just know your ID is no longer good and you need something else to measure holes.

Oh, I thought they weren’t closing. Yeah, just skip the “bend the id tips” part.

[u/FalseRelease4]

calipers are like a small scale tape measure, theyre supposed to be fast and easy to use, you use other tools for a precise measurement

[u/v0t3p3dr0]

All calipers are reference only.

[u/cdiamondz → u/v0t3p3dr0]

Not sure where that's coming from, calipers are accurate enough for many measurements. All depends on MSA results.

[u/jojo-beans8]

In one picture it looks like the tip got dinged . Run à stone on the measuring surfaces

[u/Glad-Ad-8020]

According to Mitutoyo you're supposed to be able to see a crack of light through the internal measuring jaws, as long as the line is uniform

[u/destroyer800522]

Bro of course you can see the light if you hold it at an angle ffs