Digital calipers

Z.hb71

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3,306
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Manvel, Texas
So I have a crappy $7 digital calipers and there not very accurate, most of the time .5-1mm off. So what are sum good ones? Not looking to spend more then 30 bucks cuz I don't see why spend that much.
 

Pete13

New Member
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1
Good ones and 30.00 don't go hand in hand. But you can get a decent pair for around that at home depot.
 

Z.hb71

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Manvel, Texas

voo2doo

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£10 ones here , they do what I want as I don't need accurate measurements when measuring the distance my front wheels to the rest of the car when I have a major spill...:ROFLMAO:

J
 

dougstar

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KZN South Africa
£10 ones here , they do what I want as I don't need accurate measurements when measuring the distance my front wheels to the rest of the car when I have a major spill...:ROFLMAO:

J
+1 just need the basics
here is a pic of my ones used the for more the 10 years its all you need
1546197018527.png
 

Z.hb71

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3,306
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Manvel, Texas
+1 just need the basics
here is a pic of my ones used the for more the 10 years its all you need
View attachment 48426
£10 ones here , they do what I want as I don't need accurate measurements when measuring the distance my front wheels to the rest of the car when I have a major spill...:ROFLMAO:

J
I wouldn't care that much about accuracy but I'm building a engine as u know so I need accuracy.
 

Seandonato73

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Messages
1,217
I have both. The micrometer is much more accurate then the calipers. If you know your not going to be measuring over a certain size you can just buy what size range mic. You need. The normally measure in inch increments ie. 0to1" 1to2" and so forth. I don't know what your trying to measure specifically so it's hard to say yes or no as to what would be good enough. If your figuring out what base gasket you need calipers are good enough. If you want to measure clearances you should be using mics. You may need snap gauges to measure the inside diameter of something too.
 

Z.hb71

Well-Known Member
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3,306
Location
Manvel, Texas
I have both. The micrometer is much more accurate then the calipers. If you know your not going to be measuring over a certain size you can just buy what size range mic. You need. The normally measure in inch increments ie. 0to1" 1to2" and so forth. I don't know what your trying to measure specifically so it's hard to say yes or no as to what would be good enough. If your figuring out what base gasket you need calipers are good enough. If you want to measure clearances you should be using mics. You may need snap gauges to measure the inside diameter of something too.
Yeah, I'll need both cuz I'm pretty sure u can measure like inside diameter of stuff? And stuff like that
 

Seandonato73

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1,217
Yep get both. The caliper will get you close enough on most stuff. The mics will get you dead on for the stuff that matters
 

Top Dead Center

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101
Location
Colorado
I was going to recommend Starrett or Mitutoyo but neither of them are in your set price range. Don't even think about Brown and Sharpe. The Husky brand with lifetime warranty no questions no receipt is choice for a budget caliper. I'd check its accuracy against a 123 block. Gage pins or gage blocks would be better but cost serious coin.

For inside bore get a set of telescoping gages. They don't need to be expensive, they just need to lock. If you don't know what they are or how to use them, youtube is your friend. They're really simple to use.

Like @Seandonato73 said a mic is going to be more accurate. Since you are building a small two stroke instead of a space shuttle, you can get by with a caliper and telescoping gage. When the radius of piston or any other round object exceeds the jaw length on the calipers, then you'll need to step up to a micrometer or long jaw calipers.

Edit: Forgot to add you can find a lot more uses for the 123 blocks than just measuring.
 
Last edited:

Z.hb71

Well-Known Member
Messages
3,306
Location
Manvel, Texas
I was going to recommend Starrett or Mitutoyo but neither of them are in your set price range. Don't even think about Brown and Sharpe. The Husky brand with lifetime warranty no questions no receipt is choice for a budget caliper. I'd check its accuracy against a 123 block. Gage pins or gage blocks would be better but cost serious coin.

For inside bore get a set of telescoping gages. They don't need to be expensive, they just need to lock. If you don't know what they are or how to use them, youtube is your friend. They're really simple to use.

Like @Seandonato73 said a mic is going to be more accurate. Since you are building a small two stroke instead of a space shuttle, you can get by with a caliper and telescoping gage. When the radius of piston or any other round object exceeds the jaw length on the calipers, then you'll need to step up to a micrometer or long jaw calipers.
Thanks for the information! Also I think I could do $50 bucks for the calipers, any suggestions? I think I could probs get a used mitutoyo
 

Top Dead Center

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Messages
101
Location
Colorado
If you can get a used Mitutoyo for $50, go for it. Couple of SPI calipers here. I can't recommend them because of no experience with them but MSC is a good company to deal with. I never get so lucky but know of many that cleaned up at estate sales or garage sales.
 
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