U.S. MKXV Tachometer Disk Speed Indicator

This is a MKXV Tachometer Disk speed indicator designed to test the Norden Bombsight which was fitted on all U.S. bombers. This example is maker marked 'Jaeger Watch Company and is in excellent condition still in its original box, which contains one of the Tachometer tips, unfortunately the other is missing. It also has its instruction sheet and test card which has its last test date 6th August 1943.

Code: 68566