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Rifles, Reloading, Optics, Equipment
Gunsmithing
dial indicator help
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<blockquote data-quote="Trickymissfit" data-source="post: 494185" data-attributes="member: 25383"><p>The average Joe can get by most of the time with a B&S "Last Word." But if your working at less than .0005" you need a good indicator. Most all indicators are designed to be in one position and not moved. When you rotate a dial indicator you add built in lag (nature of the beast). Some are as high as 10% and some are less than 3%. The Interrapid and the Best Test are true zero lag indicators, so you can safely turn them upside down and rely on the reading you see. I probably own thirty or forty dial indicators in one form or another (cigar boxes full of them). But when I used to work very close it was always the Interrapids, or a pair of very special one tenth dial indicators (fully jewelled 3% gear & rack jobs that only had ten thousandths travel). The .000050" indicators started out as a joke on me, but they did have their uses. I did have three .000020" indicators that were extremely accurate, and were used to check surface plates (I sent them back to Federal once a year for cleaning and rebuilding). If you keep the indicator in a static position most all will do the job well as long as they meet Federal specs. Do avoid the Chinese ones! But Mitutoyos are not all that bad.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 494185, member: 25383"] The average Joe can get by most of the time with a B&S "Last Word." But if your working at less than .0005" you need a good indicator. Most all indicators are designed to be in one position and not moved. When you rotate a dial indicator you add built in lag (nature of the beast). Some are as high as 10% and some are less than 3%. The Interrapid and the Best Test are true zero lag indicators, so you can safely turn them upside down and rely on the reading you see. I probably own thirty or forty dial indicators in one form or another (cigar boxes full of them). But when I used to work very close it was always the Interrapids, or a pair of very special one tenth dial indicators (fully jewelled 3% gear & rack jobs that only had ten thousandths travel). The .000050" indicators started out as a joke on me, but they did have their uses. I did have three .000020" indicators that were extremely accurate, and were used to check surface plates (I sent them back to Federal once a year for cleaning and rebuilding). If you keep the indicator in a static position most all will do the job well as long as they meet Federal specs. Do avoid the Chinese ones! But Mitutoyos are not all that bad. gary [/QUOTE]
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dial indicator help
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