WWII Weather Measure Corp. Water Current Meter-Boxed Set (Complete)

Vintage Water Current Meter Complete Boxed Set by Weather Measure Corp. Circa 1930-1940’s. Rotor current meters, such as this, utilized the instruments propeller to accurately measure the rate of flow in water currents. Complete original. Good condition. 

Plaque on Box Reads: 'Weather Measure Corp; Water Current Meter; Model: F-583; Serial No. 119; Calib. 7776; Sacramento, California, U.S.A.'

Weight: 5 lbs. 4 oz. 

Dimensions: 12.75" x 8.25" x 4.00"

Inside Paper Reads:

'WEATHERMEASURE CORPORATION

3213 Orange Grove Ave.; North Highlands. California 95660;

F583 Water Current Meter

Meter No. 27817 Test No. 4342;

V=KN+C; V=0.631 N (handwritten) + 0.045 (handwritten also-(V=0.631N+0.(0 or 8?)45))

V= Velocity in meters/second

N=Number of revolutions per sec. of cup assembly

Calibration Test Range: 0.16 m/s to 1.22 m/s)'