I love it when the marketting don't understand the measuring system.
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So, I'm looking for 11mm (7/16th) ID grommets (it's for pressure washer tool storage) so I'm trying to find then on Amazon and FleaBay. And this caught my eye:
"Package Includes:
20 Pcs - 14 mm
20 Pcs - 17 mm
50 Pcs - 11 mm
20 Pcs - 15 mm
50 Pcs - 10 mm
50 Pcs - 9 mm
50 Pcs - 8 mmWarm Tips: Due to different measurement methods, there is a deviation of 1-2 cm."
So ... there can be a 2 cm error in measuring or manufacturing a 8mm part? Okay ...
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Reminds me of years ago, manufacturing guy went to engineering and gave him a "bag containing 100ea .005" shims", said they were on the low side of tolerance: .005" + or - .005". The bag was empty.
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Reminds me of years ago, manufacturing guy went to engineering and gave him a "bag containing 100ea .005" shims", said they were on the low side of tolerance: .005" + or - .005". The bag was empty.
@theoldfool LOL.
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I had a friend who worked in QA for a roofing shingle manufacturer. Shingles are produced at an average thickness plus or minus some fraction.
One day a honcho from corporate came to the factory to get a handle on costs. In a meeting with the QA dept the exec asked, "How many shingles are produced over spec?" The QA manager replied, "Half." The exec exclaimed, "Well that's too many!" My friend's boss stood up, turned to my friend and said, "Explain it to him." and left the meeting.