Strain gages go down a hole

We all know that rabbits can go down a hole but did you know that strain gages can too? There are instances where it is preferred to install the strain gage inside a hole rather than on the surface. The most popular reasons are  for locating the gage in an area totally protected from the outside world (just like the rabbit) or to place the gages near the neutral axis of bending in a tubular structure. The procedures for gage installation inside a deep hole are well documented in this Micro-Measurement application note:

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Jim Weidner

Chief Applications Engineer