Hello,
Can you post a photo showing the bottom of the dial face completely?
It is a panel flush mount unit normally found in a electronics panel, radio or test set.
They show up a lot in aircraft old NOS stock where they were commonly used in test sets.
http://www.wbparts.com/rfq/6625-00-384-8509.html
6625-00-384-8509 Request for Quote Plus Technical Data
Manufacturing Part Numbers under this NSN: 10688, 10688A, 4011, 4015-190, 66741, 9717A, A10101, E48468M, K10688, K9717
6625-00-384-8509 Characteristics Data
MRC Criteria Characteristic
AMQY INSTALLATION DESIGN PANEL
APSN (NON-CORE DATA) PANEL FOR WHICH DESIGNED NONMAGNETIC
BHSX (NON-CORE DATA) CIRCUIT CONSTRUCTION TYPE NONELECTRONIC
AMKD INDICATOR TYPE DIAL W/POINTER
BHMW MEASUREMENT RANGE -30.0 TO 30.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
APPN ACCURACY IN PERCENT -8.0 TO 8.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
BHDC SCALE GRADUATION TYPE LINEAR SINGLE INDICATOR SINGLE RANGE
ABWG SCALE DIVISION QUANTITY 12 SINGLE INDICATOR SINGLE RANGE
ASSS POINTER COLOR WHITE SINGLE INDICATOR SINGLE RANGE
APMM DIAL SCALE MARKING COLOR WHITE SINGLE INDICATOR SINGLE RANGE
AQFY BACKGROUND COLOR BLACK SINGLE INDICATOR SINGLE RANGE
AQEC MOVEMENT TYPE MOVING COIL, PERMANENT MAGNET
CTQL MOVEMENT SUSPENSION METHOD JEWEL PIVOT BASE
CTTD CIRCUIT ATTACHMENT METHOD AND QUANTITY 2 THREADED STUD
ANTG SENSITIVITY RATING 46.0 MILLIVOLTS
BLSB SCALE SELECTION METHOD TERMINAL
AWZJ POWER SOURCE EXTERNAL
AACT CIRCUIT CURRENT FOR WHICH DESIGNED DC
STYL STYLE DESIGNATOR C1 ROUND FLUSH MTG
APSW METER BODY DIAMETER BEHIND MOUNTING FLANGE 1.954 INCHES MINIMUM AND 2.037 INCHES MAXIMUM
APST METER DEPTH BEHIND MOUNTING FLANGE 0.656 INCHES MINIMUM AND 0.979 INCHES MAXIMUM
ADAV OVERALL DIAMETER 2.625 INCHES MINIMUM AND 2.656 INCHES MAXIMUM
ABHP OVERALL LENGTH 1.479 INCHES NOMINAL
AXHR MOUNTING FACILITY TYPE AND QUANTITY 3 UNTHREADED HOLE
ABTB MOUNTING HOLE DIAMETER 0.144 INCHES MINIMUM AND 0.175 INCHES MAXIMUM
ANRL MOUNTING ARRANGEMENT STYLE E5 THREE HOLE/STUD BOLT CIRCLE
AFFL MOUNTING BOLT CIRCLE DIAMETER 2.374 INCHES NOMINAL
NHCF NUCLEAR HARDNESS CRITICAL FEATURE NONHARDENED
CBBL FEATURES PROVIDED ZERO ADJUSTER
ZZZV III FSC APPLICATION DATA TEST SET, ELECT. EQUIP.
http://www.warbird-parts.com/invent/gauges.html
S-561 Ampmeter, -30 to +30 amps, mfgd. by Chrysler, P/N 1-PT-E-48468-M, brand new $ 35.
Wes K
wsknettl@centurytel.net
54 M37, 66 M101, 45MB, 51 M38, 60 CJ5, 46 T3-C
MVPA 22099
Disclaimer: Any data posted is for general info only and may not be M37 specific or meet with the approval of some esteemed gurus.