I have an MSC dial gauge just like in this video. The first 90 seconds will illustrate some very confusing info, specifically the even and odd side of the gauge. What is this man trying to say here
https://www.youtube.com/watch?v=lyoEtXPwCkw
My gauge covers 0.375 to 1.375 just like the one in the video. What perplexes me is that I can set a zero, but then when I measure a micrometer set to one inch, the gauge reads 0.600. The coarse needle ranges from 1 to 0, so if I set my mic to 1.375, the gauge does compress about 17 thou and the fine dial reads 75 thou. But if I read the entire dial, it's telling me 0.975.
A similar gauge in the video below makes perfect sense. It ranges from 5 to 15 mm, and when they set a zero using a 4.9990 standard, the coarse and fine needles point to 5 and 0, respectively.
https://www.youtube.com/watch?v=0zzQpzOG20w
Now that makes me wonder if the coarse needle on my gauge should not instead be labeled 1.4 to 0.4. Why would they label it 0 to 1? They all seem to be that way, except the fancy, stupidly expensive ones, i.e., both of these are SPI:
https://www.mscdirect.com/product/details/88094545
https://www.mscdirect.com/product/details/67947226
Also, what is the material that makes up the contact balls? When I first saw that I thought the contact anvil had a dab of glue or paint, and I thought it needed to be picked off. Seems like hard stuff and I realize its intent.
Inside Dial Gauge
Inside Dial Gauge
Standards are so important that everyone must have their own...
To measure is to know - Lord Kelvin
Disclaimer: I'm just a guy with a few machines...
To measure is to know - Lord Kelvin
Disclaimer: I'm just a guy with a few machines...
Re: Inside Dial Gauge
ctwo wrote: ↑Wed Dec 14, 2022 5:59 am I have an MSC dial gauge just like in this video. The first 90 seconds will illustrate some very confusing info, specifically the even and odd side of the gauge. What is this man trying to say here
https://www.youtube.com/watch?v=lyoEtXPwCkw
My gauge covers 0.375 to 1.375 just like the one in the video. What perplexes me is that I can set a zero, but then when I measure a micrometer set to one inch, the gauge reads 0.600. The coarse needle ranges from 1 to 0, so if I set my mic to 1.375, the gauge does compress about 17 thou and the fine dial reads 75 thou. But if I read the entire dial, it's telling me 0.975.
A similar gauge in the video below makes perfect sense. It ranges from 5 to 15 mm, and when they set a zero using a 4.9990 standard, the coarse and fine needles point to 5 and 0, respectively.
https://www.youtube.com/watch?v=0zzQpzOG20w
Now that makes me wonder if the coarse needle on my gauge should not instead be labeled 1.4 to 0.4. Why would they label it 0 to 1? They all seem to be that way, except the fancy, stupidly expensive ones, i.e., both of these are SPI:
https://www.mscdirect.com/product/details/88094545
https://www.mscdirect.com/product/details/67947226
Also, what is the material that makes up the contact balls? When I first saw that I thought the contact anvil had a dab of glue or paint, and I thought it needed to be picked off. Seems like hard stuff and I realize its intent.
Standards are so important that everyone must have their own...
To measure is to know - Lord Kelvin
Disclaimer: I'm just a guy with a few machines...
To measure is to know - Lord Kelvin
Disclaimer: I'm just a guy with a few machines...
Re: Inside Dial Gauge
It's .2 per revolution, so 0-.1 on one side (odd) will be .1, .3, .5, 7, and 9, and 0-.1 on the other side (even) will be .2, .4, .6, .8.
(This is like trying to explain how to read a vernier caliper without being there and showing how...)
Glenn
Operating machines is perfectly safe......until you forget how dangerous it really is!
Operating machines is perfectly safe......until you forget how dangerous it really is!
Re: Inside Dial Gauge
OK, I get that. I'd just look at the coarse needle to figure out the 10ths place.
Looks like I punched the wrong button to edit my post...
Looks like I punched the wrong button to edit my post...
Standards are so important that everyone must have their own...
To measure is to know - Lord Kelvin
Disclaimer: I'm just a guy with a few machines...
To measure is to know - Lord Kelvin
Disclaimer: I'm just a guy with a few machines...