trevj
Titanium
- Joined
- May 17, 2005
- Location
- Interior British Columbia
Sooooo....Near end of day today, got into an argument with one of the young fellas at work.
He carries his dial Caliper about with him and trusts it like it's the holy grail itself.
I figure they are great tools for checking stock size and sheet metal thicknesses.
Short of it was, when I told him that if he expected my signature on his work, he had better start measuring things with a micrometer. We routinely are asked to measure distances defined in half thou dimensions. He believes that a dial Caliper is as accurate as needed, because, in the case this afternoon, there is a 12 thou difference between the min and max dimensions, since that is way larger than the one thou he expects of his dial caliper, that I am being unreasonable. Eg: (numbers pulled outta my...) min allowable dimension, 2.1320, max 2.1335. Gotta be between, not over or under. I figure that last half thou may be the difference between a serviceable part, and one we don't have anymore. I want to be sure. I'm stuck training this one, sometimes supervising. Can't fire him.Not allowed to hit him with sticks.
<sigh> If he spent half the effort he spends arguing, on improving the work he does, he'd be getting somewhere.
Me, I'll happily trust a dial Caliper to a plus or minus 5 thou measurement. He thinks I should take it on faith that he can measure accurately to a thou with one. This after I used his caliper and got a 3 thou difference from the measurement he had told me he got (He said the dimension was over by two thou, I measured it as one thou under, and asked him to measure it with an accurate tool). And so the argument began... That and a endless circle around "you were asked to make a part this size" vs "the page had plus or minus .005 on all dimensions written on it" back to "yes, but you were instructed to make it that size on the work order, exactly, or as close as.." back to "but the drawing..." Christ I hate arguing over stuff I have to sign for.
What's a dial caliper reasonably expected to be able to do? I'll be checking with our calibration folks to see what they inspect them to meet. Mitutoyo's docs claim one thou for a dial caliper, one tenth for a micrometer.
Interested in what the expectations are from the tool. Sadly can't take you up on any suggestions for other than patience, with regards to the other one.
Cheers
Trev
He carries his dial Caliper about with him and trusts it like it's the holy grail itself.
I figure they are great tools for checking stock size and sheet metal thicknesses.
Short of it was, when I told him that if he expected my signature on his work, he had better start measuring things with a micrometer. We routinely are asked to measure distances defined in half thou dimensions. He believes that a dial Caliper is as accurate as needed, because, in the case this afternoon, there is a 12 thou difference between the min and max dimensions, since that is way larger than the one thou he expects of his dial caliper, that I am being unreasonable. Eg: (numbers pulled outta my...) min allowable dimension, 2.1320, max 2.1335. Gotta be between, not over or under. I figure that last half thou may be the difference between a serviceable part, and one we don't have anymore. I want to be sure. I'm stuck training this one, sometimes supervising. Can't fire him.Not allowed to hit him with sticks.
<sigh> If he spent half the effort he spends arguing, on improving the work he does, he'd be getting somewhere.
Me, I'll happily trust a dial Caliper to a plus or minus 5 thou measurement. He thinks I should take it on faith that he can measure accurately to a thou with one. This after I used his caliper and got a 3 thou difference from the measurement he had told me he got (He said the dimension was over by two thou, I measured it as one thou under, and asked him to measure it with an accurate tool). And so the argument began... That and a endless circle around "you were asked to make a part this size" vs "the page had plus or minus .005 on all dimensions written on it" back to "yes, but you were instructed to make it that size on the work order, exactly, or as close as.." back to "but the drawing..." Christ I hate arguing over stuff I have to sign for.
What's a dial caliper reasonably expected to be able to do? I'll be checking with our calibration folks to see what they inspect them to meet. Mitutoyo's docs claim one thou for a dial caliper, one tenth for a micrometer.
Interested in what the expectations are from the tool. Sadly can't take you up on any suggestions for other than patience, with regards to the other one.
Cheers
Trev