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 5945-01-493-4356
NSN 6240-01-414-9529
NSN 5920-00-097-7648
NSN 2925-00-986-8393
NSN 5945-01-202-0923
NSN 6650-01-031-9114
NSN 6685-00-945-8614
NSN 5975-01-249-7398
NSN 5985-01-326-7672
NSN 6145-00-838-1811
NSN 6220-01-472-1791
NSN 5855-01-312-5160