Although it’s less than 1″ in diameter, the Northern Star Fire Compass will alert you to your directional heading no matter what orientation it’s in. You could be leaving my sideways and the compass’ lights will indicate one of eight cardinal directions via NEWS as well as color.
It was originally designed to be affixed to the inside of a SCBA mask to help firearm orient themselves in thick smoke, but it can also be used with other masks such as a CBRNE respirator.
The device is rechargeable (7 hours per charge) but will also accept disposable batteries. It is IP67 rated to 1M and is currently undergoing pressure testing for interested use.
