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Compact Laser Displacement Sensor

Compact Laser Displacement Sensor

Compact Laser Displacement Sensor

(OP)
I am looking for laser displacement senor roughly 1"x1"x0.5"
Does anyone know of a company that sells a laser this compact?

I need to measure the thickness of a section of copper tube.  The setup needs to work so that I can take multiple measurements around the circumference of the tube at a high sample rate.  Without touching the tube! I am trying to find a VERY compact laser displacement sensor head that I can fit inside the end of a 2" diameter copper tube.  So far the smallest lasers I have been able to find are roughly 3"x2"x1".  Does anyone know of a company that sells a laser this compact?
 

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