Ekstrom meter base socket tester s-120

What is for sale: Ekstrom meter base socket tester s-120

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SINGLE PHASE METER SOCKET TESTER
Type S-120 120/240 Volt 3-Wire Single-Phase
Protect your meter installer with this last-check safety device for all new meter socket installations.
This safe, simple-to-use test device checks meter sockets for short circuits, grounds, back-feed and wiring errors before the meter is set on 120/240 volt 3-wire single-phase self-contained socket installations.
Note: The S-120 Meter Socket Tester is not intended as a replacement for normal socket check procedures. It will not detect backfeed in all situations.
This is a used tester that has some scuffs and scrapes,