Museum logo
Museum logo

Object Record

  • Email This Page
Object Name Clock, Wall
Catalog Number 1999.15
Collection Timepiece
Other Name Zig Zag Convoy clock
Date 1940
Description c.1940 Conlan Electric Co Zig Zag Convoy control timerclock
Movement for clock is 1999.15a
Control timerclock and course clock invented during WWII. The purpose was to provide convoys with a pre selected steering program that would make it extremely difficult for enemy sumbarines to "home" in on a ships position and thus obtain a torpedo bearing. Was installed on a bridge and utalized a bell or buzzer signal system, which when sounded, notified the officer of the deck to change direction.

Maker Conlan Electric Corporation
Place of Origin New York, New York, USA
Notes First model prototyped at US Naval Observatory in the later part of 1941.