Model #B378-1300

Electrical frequency meter (NSN 6625-01-131-0002)

Special Features
18k ohm resistor mounted on back of meter
Description

2.062 inches nominal overall length, plastic material.

Circuit Current For Which Designed
Ac
Center To Center Distance Between Mounting Facilities Parallel To Length
2.750 inches
Center To Center Distance Between Mounting Facilities Parallel To Width
2.375 inches
Overall Height
3.500 inches
Overall Width
3.500 inches
Scale Division Quantity
10 single indicator single range
Mounting Stud Length
0.500 inches
Shortest Horizontal Distance Between Mounting Centers
1.375 inches
Indicator Type
Dial w/pointer
Installation Design
Panel
Mounting Arrangement Style
Three hole/stud triangular
Dial Scale Marking Color
Black single indicator single range
Accuracy In Percent
-2.0/+2.0 at full scale single indicator single range
Meter Depth Behind Mounting Flange
1.625 inches
Meter Body Diameter Behind Mounting Flange
2.625 inches
Movement Type
Moving coil, permanent magnet
Background Color
White single indicator single range
Mounting Facility Type And Quantity
3 threaded stud
Scale Graduation Type
Linear single indicator single range
Measurement Range
+55.0/+65.0 hertz single indicator single range
Mounting Stud Diameter
0.112 inches
Features Provided
Zero adjuster
Movement Suspension Method
Jewel pivot base
Circuit Attachment Method And Quantity
2 threaded stud
Nuclear Hardness Critical Feature
Nonhardened
Style Designator
Rectangular flush mtg
Description
Meter,electrical Frequency
Cage Code
21269

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Updated: 11/22/2024