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Posted (edited)
5 hours ago, NOBLNG said:

Just to keep everything relevant, I made a vernier clamp.🤓

 

IMG_0632.jpeg

For those who like too much information….This particular caliper reads measurements in 1/128ths of an inch apparently.😳 The main scale (ruler) is marked off in 16ths. There are 8 spaces on the “vernier” scale at the top of the movable jaw (8x16= 128) so each graduation equals 1/128 of an inch. The first “0” mark is just shy of the 2-1/2” mark, so 2-7/16” (2-56/128”) is the measurement to be added to. The 7th “vernier” graduation mark lines up the best with a graduation on the main scale (16ths) so 7/128ths is added to the 56/128ths for a total of 2-63/128ths. 
1 divided by 128=approximately .0078x63=.492 So this measures 2.492 by this caliper.

I measured it with 2 other calipers: Cheap Vernier= 2.492” Dial caliper= 2.496”   Digital caliper= 2.493” 

So this cheapo caliper is pretty darn accurate to two decimal places. My brain hurts now, so I think I will stick to my dial and digital units.

 

Edited by NOBLNG
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Posted
15 hours ago, NOBLNG said:

 

So this cheapo caliper is pretty darn accurate to two decimal places. My brain hurts now, so I think I will stick to my dial and digital units.

 

You must have gotten a Monday morning caliper. Seems like mine was made on a Wednesday, right after lunch. The one I just bought gradually gets worse, being a 16th off by three inches. Definitely clamp material. 

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Posted
6 hours ago, Vessey said:

Good tip for unusually shaped parts.

The vernier calipers can be used with double sided tape to line up small parts parallel to each other, such as the end plates of this 1/43 F1 car (skip to the 4 minute mark):

https://youtube.com/watch?v=TMmx2iWaJtc

Thanks, I could see that trick coming in handy.😎

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