TM 9-6695-274-14
Figure 1-57. Hewlett-Packard, Model 506A, Motional Transducer.
Angular speed measurements can be made with Hewlett-Packard, Model 506A, Motional Transducer (fig. 1-57) and an
electronic counter to display the readings. Model 506A is capable of angular speed measurements up to 12,000
revolutions per minute.
1-80