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techtalk:ref:tools109 [2019/05/28 05:26]
hippysmack
techtalk:ref:tools109 [2019/05/28 05:27]
hippysmack [Telescoping Bore Gauge (snap gauge)]
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 One measurement is usually not enough to say that you have a good reading from it. \\ One measurement is usually not enough to say that you have a good reading from it. \\
 Lots of factors are involved in getting the correct measurement with it also. Lots of factors are involved in getting the correct measurement with it also.
-  * Snap gauges are notorious for closing in (slightly) when the nut is tightened. ​\\ This will give you a bad reading. \\ You should feel a slight drag in the bore with the arms loose and the same when tightened. \\ Continue with the forward and back motion until you feel like the tool is perpendicular to the bore (with a slight drag). \\ Then tighten the nut and double check that you still have drag on the tool BEFORE removing it from the bore.+  * Snap gauges are notorious for closing in (slightly) when the nut is tightened. This will give you a bad reading. \\ You should feel a slight drag in the bore with the arms loose and the same when tightened. \\ Continue with the forward and back motion until you feel like the tool is perpendicular to the bore (with a slight drag). \\ Then tighten the nut and double check that you still have drag on the tool BEFORE removing it from the bore.
   * It's also easy to turn the tool sideways (even slightly) and feel drag. \\ Then while double checking the distance when tightened, you get even more drag. \\ Since a sideways measurement is longer than a straight thru measurement,​ this will give you a bad reading.   * It's also easy to turn the tool sideways (even slightly) and feel drag. \\ Then while double checking the distance when tightened, you get even more drag. \\ Since a sideways measurement is longer than a straight thru measurement,​ this will give you a bad reading.