DIAL TEST INDICATOR POSITIVE & NEGATIVE MEASUREMENT

This video are measurement and testing instrument, positive and negative measurement with practical also all parts with description LC .01mm.A dial test indicator, also known as a lever arm test indicator or finger indicator, has a smaller measuring range than a standard dial indicator. A test indicator measures the deflection of the arm, the probe does not retract but swings in an arc around its hinge point.
The working principle of the Dial Indicators is that the movement of the spindle multiplied with the reading of the main scale due to the indication of the needle. In addition to this, at the main scale rotation of pinions and gears is indicated.
There are two main types of dial test indicator. This type of instrument relies upon a rack and pinion mechanism to change the linear (straight-line) movement of the plunger into rotary motion for the pointer.

[@bhavnasaini1114]

Best explation

[@FundamentalGurujee]

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[@classroomdada1868]

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