Builders' Forum Archives
Re: Mineral oil
Posted by BobE on Nov 23, 2004
is what I've always been told. A pharmacist friend (also HAZMAT trained first responder) once said to use any off the counter mineral oil. Believe the compass manufacturers have specifications. I've tried this option and it works. Also have read of using kerosene. You might check with an A&P mechanic at a local air field. A quick web search did not reveal the freezing point.
In Response to: Liquid Compass Question by Mac on Nov 23, 2004