This professional grade Electronic Barometer was designed specifically for the mariner. Not only does it show current pressure on the large display, it also displays historical information on a much more expanded scale than most electronic barometers. For example, someone just coming on watch can see an expanded history of any changes that occurred over the last 6 hours in 30 minute increments.
Features:
The unit is housed in gray plastic
It can be free standing or mounted to a bulkhead with the included mounting bracket
Accurately detects pressure changes to within +/- 0.5 hPa.
Alarm feature to signal abrupt changes in pressure
Gale warning system
Continuous display of current pressure
Continuous display of time and/or temperature
Backlighting for night use
Operates on 2 AAA batteries (included) average battery life - 1 year