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 5905-00-237-3197
NSN 6610-01-253-1449
NSN 7035-00-553-6951
NSN 5930-01-230-0122
NSN 5990-00-424-1598
NSN 6135-01-337-9315
NSN 5975-01-110-8425
NSN 6110-00-832-4975
NSN 6110-00-384-1704
NSN 5998-01-224-7193
NSN 6320-00-160-0899
NSN 5950-01-408-6172