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Vintage Marion panel meter 0-100 / 0-500 microamps uA DC

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Simpson Analog Panel Meter; 0-100 uA DC; 3" Square w/ Box; Tested

INTERNATIONAL INSTRUMENTS DC UA PANEL METER New Haven Conn.

WESTON M-121 ES.50 UA DC / CIRCUIT BOARD EDGEWISE PANEL ELECTRICAL METER

Velleman HOPESUN AIM60005 ANALOG CURRENT PANEL METER 50µA uA DC 2.4" x 1.9"