A micro-extension measurement unit for the Instron 1185
B.W. Darvell, P K -D Lee · Measurement Science and Technology · 1995
A circuit is described to display cross head displacement to a resolution of 1 mu m, and to provide a proportional analogue voltage for a chart recorder. This has applications where strain gauge systems are inappropriate or impractical, and also permits recording of displacement versus time, an option otherwise not available.