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How can I measure accuracy of strain gage placement

How can I measure accuracy of strain gage placement

How can I measure accuracy of strain gage placement

(OP)
Hello,

I need some advice on how to inspect strain gage placement inside a load cell.  Typically strain gages have alignment marks, the gage itself is small at (0.25" x  0.14" ).  The gage is bonded in the center of a hole (0.55" dia) drilled through inside the load cell (which is basically  a
5"x1" block of steel).

Currently gage placement is visually alligned to scribed lines.  During the bonding process it is possible for the gage to slip translationally as well as rotationally.

I need a way to measure how far off the allignment from the scribe lines are.

I was wondering if there is some lighted, flexible or right angle, boroscope with a reticule????

I really have no ideas, any comments or suggestions would be greatly appreciated.

Please note that this is request is for qc (not calibration purposes).

Thank you for your time


Qu1nn

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