Originally introduced in 1954 for people who worked around strong magnetic fields such as power plant workers, hospital employees, and research laboratories.
Current production models, using Faraday Cage construction, are good for work around 1,000 Gauss
Milgauss Reference Numbers: 6451, 1019, 116400
Date of production: 1954 to ~1986, 2007 to current
Movements: 1019 -1580 & 116400 - 3131
Case size: 1019-38mm; 116400 - 40mm
Weight: 116400 - 154 grams
Power Reserve: ~44 hours
Photographs:
Dial. Matt Black
(Photos courtesy of Mike)