15001, M-5600, Stewart Warner Aircraft Hobbs Hour Meter

2 1/4" Cessna / Piper / Beech Stewart Warner Hobbs / Hours Meter as shown on photos. P/N 15001 or M-5600 or M5600. It operates on both 12V and 24V. (4VDC to 50V DC working voltage range). It reads 1578.0 hrs. It was removed from salvage aircraft.