MadSci Network: Other

Re: What is the composition of the liquid used to fill a Silva compass?

Date: Fri Jun 5 11:21:23 1998
Posted By: Lillian Mundt, Faculty, Clinical Laboratory Sciences, Finch University of Health Sciences/The Chicago Medical School
Area of science: Other
ID: 895715666.Ot

This question is outside of my area of expertise.
However, there are only several fluids used in  compasses, gages, etc.
that I know of.	Of more importance is the viscosity of the mixture, usually
mixed with a solvent (water or alcohol)

	Fluids commonly used are:
	Water - probably not in this case, could freeze
	Alcohol - possibly
        Glycerol - possibly, if thinned out
	Ethylene Glycol - green tint, possible if thinned out.

A couple of web sites I found; although not containing the answer are:

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