Chapter 12 - Clocks and Associated Devices - Arming Clock: UES II and UES IIa with VorkontaktChapter 12 - Clocks and Associated Devices - Sterilizers (Zeit Einrichtungen): ZE
GERMAN UNDERWATERS ORDNANCE MINES
Chapter 12 - CLOCKS AND ASSOCIATED DEVICES
STERILIZERS (ZEIT EINRICHTUNGEN)

All Zeit Einrichtungen, with the exception of the ZE IVb, are used exclusively as steri-lizers. Although the ZE IVb is a sterilizer, it was used as an anchor-release clock for the SMC mine anchor, and in this case was designated NU II.