Chapter 12 - Clocks and Associated Devices - Prevent-Stripping Equipment (P.S.E.) (Geheimhalteeinrichtung): TMA P.S.E.Chapter 12 - Clocks and Associated Devices - Prevent-Stripping Equipment (P.S.E.) (Geheimhalteeinrichtung): Mechanical P.S.E.
GERMAN UNDERWATERS ORDNANCE MINES
Chapter 12 - CLOCKS AND ASSOCIATED DEVICES
PREVENT-STRIPPING EQUIPMENT (P.S.E.) (GEHEIMHALTEEINRICHTUNG)
BM 1000 P.S.E. (Used with Mines Type BM 1000)

This device consists of two photo-electric cells, mounted on either side of the firing unit, which, when exposed to light, operate a relay and close the unit firing circuit, firing the main charge. The device becomes armed when the firing unit arms. It may be fitted with a firing unit that incorporates M 101 or subsequent modifications thereof. The pre-sence or absence of this device cannot be determined from an examination of the ex-terior of the mine case.