Model: 638

Arbitrary Scale Meter

Special Features:

Ruggedized

Properties:

Circuit Current For Which Designed

Dielectric Withstanding Voltage In Volts

3000.0

Overall Length

2.850 inches

Mounting Hole Diameter

Between 0.143 inches and 0.157 inches

Scale Division Quantity

50 single indicator all ranges

Overall Diameter

3.510 inches

Environmental Protection

Cold resistant and heat resistant and shock resistant and submersible and vibration resistant and watertight

Mounting Bolt Circle Diameter

3.160 inches

Furnished Items And Quantity

Mtg hdw 3; term. Hdw 2

Indicator Type

Dial w/pointer

Installation Design

Panel

Mounting Arrangement Style

Three hole/stud bolt circle

Sensitivity Rating

10.0 milliamperes

Dial Scale Marking Color

Black single indicator all ranges

Accuracy In Percent

-2.0/+2.0 at full scale single indicator all ranges

Accuracy In Percent

-2.0 to 2.0 at full scale single indicator all ranges

Unable To Decode

Unable to decode or unable to decode

Meter Depth Behind Mounting Flange

1.660 inches

Meter Body Diameter Behind Mounting Flange

2.800 inches

Movement Type

Moving coil, permanent magnet

Background Color

White single indicator all ranges

Pointer Color

Black single indicator all ranges

Scale Marking

2 bands: top band marked 10; 20; 30; 40; 50; bottom band marked 0; 20; 40; 60; 80; 100

Mounting Facility Type And Quantity

3 screw and 3 unthreaded hole

Scale Graduation Type

Linear single indicator all ranges

Features Provided

Luminous scale marking and magnetic shield and zero adjuster

Movement Suspension Method

Jewel pivot base

Circuit Attachment Method And Quantity

2 solder lug and 2 threaded stud

Material

Stainless steel

Nuclear Hardness Critical Feature

Nonhardened

Surface Treatment

Enamel semigloss

Special Test Features

Conforms to mil-m-10304/12 type mr36m010dcmar

Style Designator

Round flush mtg

Fsc Application Data

Test set, elect. Equip.

NSN

6625-00-103-0327

Part Number

638

Description

Meter,arbitrary Scale

CAGE

77221

An electrically operated instrument which has a marked scale or digital readout display, but the unit of measurement is not given. May indicate electrical or nonelectrical effects but is primarily not a current detecting device; therefore, excludes galvanometer. For instruments whose unit of measurement is not covered by a more specific item, see meter, special scale.

Part 638 NSN 6625-00-103-0327

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16476

FIIG:

A310A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.8000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

061700

UFC:

34580

LTL:

RATING VARIABLE

LCL:

WCC:

657

TCC:

SHC:

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