As differentiated by serial no. 6610a4096a1
An instrument for measuring the rate of flow of a fluid through a pipeline. This measurement is indicated on a graduated scale either by means of a float confined in a tube, or pointer connected to a vane, or piston and spring or the like. Excludes meter, fluid flow indicating, differential pressure; meter, fluid flow indicating, electromagnetic; and meter, fluid flow indicating, ultrasonic.
NSN 5915-01-651-5390
NSN 6610-01-313-8296
NSN 5975-01-160-6435
NSN 7035-01-322-0221
NSN 5960-00-675-3439
NSN 6650-01-207-2905
NSN 5930-01-434-8879
NSN 5895-01-521-3111
NSN 7035-00-117-0418
NSN 6620-01-244-3425
NSN 6220-00-151-5383
NSN 5935-01-593-4236