Model: 1257

Ammeter

Special Features:

3.150 ohms impedance

Properties:

Circuit Current For Which Designed
Ac
Overall Length
2.330 inches
Center To Center Distance Between Mounting Facilities Parallel To Length
1.880 inches
Center To Center Distance Between Mounting Facilities Parallel To Width
1.880 inches
Overall Height
1.760 inches
Overall Width
1.760 inches
Frequency Rating
60.0 hertz
Mounting Stud Length
0.540 inches
Indicator Type
Dial w/pointer
Installation Design
Panel
Mounting Arrangement Style
Four hole/stud rectangular/square
Frequency Response Range
+25.000/+800.000 hertz
Dial Scale Marking Color
Black single indicator single range
Accuracy In Percent
-2.0/+2.0 at full scale single indicator single range
Unable To Decode
Unable to decode or unable to decode
Meter Depth Behind Mounting Flange
1.150 inches
Meter Body Diameter Behind Mounting Flange
2.170 inches
Movement Type
Moving iron vane
Background Color
White single indicator single range
Pointer Color
Black single indicator single range
Power Source
External
Mounting Facility Type And Quantity
4 threaded stud
Scale Graduation Type
Nonlinear single indicator single range
Measurement Range
+0.0/+250.0 milliamperes, ac single indicator single range
Mounting Stud Diameter
0.112 inches
Scale Selection Method
Terminal
Features Provided
Magnetic shield and zero adjuster
Movement Suspension Method
Taut band
Circuit Attachment Method And Quantity
2 threaded stud
Phase
Single
Material
Plastic phenolic
Nuclear Hardness Critical Feature
Nonhardened
Style Designator
Rectangular flush mtg
Fsc Application Data
Test set, elect. Equip.
NSN
6625-01-237-7371
Part Number
1257
Description
Ammeter
CAGE
31713

An instrument which measures electric current and is calibrated and marked in amperes or any multiple and/or submultiple thereof. The value may be expressed by means of a pointer and calibrated dial or a digital readout display. For current detecting type of devices, see galvanometer.

Part 1257 NSN 6625-01-237-7371

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16450
FIIG:
A310A0
Concept No.:
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061620
UFC:
34540
LTL:
100.0
LCL:
--
WCC:
657
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 9030908030
  • SITC: 87479
  • End Use: Measuring, testing, control instruments
  • NAICS: 334515
  • USDA: 1

Freight Class: Parts and accessories of articles of schedule b subheading 9030.39

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