(MTR) 31-FX50 JBT reed
type frequency meter indicates cycles/sec from 48-52 Hz in 1
Hz steps. 3-1/2" diameter
face.
Frequency Meter
(MTR) MMI-10628 General Electric giant
nuclear electronic frequency meter indicates 55 - 65 Hz. 4-3/4" wide x 4-3/8" high
face. 4" behind panel. Fits 4" hole.
(MTR) 30-FHXX-14 JBT reed type frequency meter indicates
cycles per second both from 47 - 53 Hz and 57 - 63 Hz. 50/60 Hz. 3-1/2" diameter.
Fits 2-3/4" hole. 2-7/8" deep.
$85 each
$165 each
400 Hz Meter
(MTR) 33-FHXX JBT reed type frequency meter
indicates cycles / sec from 380 - 420 Hz in 5 Hz steps. 3-1/2" diameter
face. Fits 2-3/4" hole. 2-7/8" deep.
(MTR)
13217E3785 A&M sealed meter for use with
external transducer. Scale: "388 - 412 Hz". Actual full
scale = 100 µa. 3-1/2" diameter face. Fits 2-3/4" hole.
Frequency Meter
50 - 70 Hz
(MTR)
566900 Electronic type frequency meter
indicates cycles per second from 50 - 70 Hz. 3-1/2" diameter
face. Fits 2-3/4" hole. 3-3/8" deep.
$45 each
$190 each
Meter / Transducer
400 Hz
(MTR) 400HZ Mil-spec 380-420 Hz system includes separate transducer
(631-16394) and Phasotron 3-1/2" meter (20690D1). Meter is
200 µADC full scale.
