F Surface roughness may limit range and accuracy. D, F Temperature variation may limit accuracy. Shafts - Diameter 6 to 250mm 0.25 to 10 in. F, H 6mm min. F Surfaces must be approx.
Temperature variation limits accuracy.
B, E Cast surface may have to be sanded or ground. H Surfaces must be approx. D, F May produce phase reversal of echo signal. B, A Usually high attenuation in rubber. A 1 MHz, 13mm dia.