How often do you measure over 12"?

I have a 24" vernier caliper, but for most OD measurements, a diameter tape (pi tape) is just about as accurate and a lot cheaper.
 
I have a 12" digital caliper I use about 1/month. Just picked up a 24" manual vernier caliper. I admit it - I'm a toolaholic.
 
I have a 24" vernier caliper, but for most OD measurements, a diameter tape (pi tape) is just about as accurate and a lot cheaper.
No a tape is not ether
Try the Starrett Vervier calipers model 123z
Master bar .
They are extremely accurate.
All you need to do is learn how to use them
The feel is a little tricky but they are very very accurate. 50 vernier divisions on them .
 
For anything over 6 inches my Starret rules and square have sufficed, I have a 12 and 24 in chrome satin that fit the combination square.
 
So I needed some stuff from Shars so I threw a 24" caliper in my cart. Ironically on ebay shipping costs for the caliper are 17 bucks. My order from shars with the caliper was 15 bucks. :concerned:
 
One of my friends, a toolmaker, claims he did an assembly over 24 feet using only an accurate tape measure and a jewelers loop, holding to .003 tolerance all along the way... I know he holds incredible accuracy on his machines, so it lends some credibility to his claim. It was cheap enough to get an accurate vernier that was 24" long.
 
Pikers! :)

My largest caliper reads to 60"

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