VINTAGE VISCOSITY COMPARATOR BY LOUIS C. EITZEN CO.

In this listing is a Vintage Visgage, Viscosity Comparator , Louis C. Eitzen Co. This does not have a date but the address does not have a zip code and they started using zip codes in the early 1960's. The Visgage is a Viscosity Comparator for the quick and accurate check of lubricating oils as they receive from storage as drawn for application in a engine, compressor or machine tool to determine the condition of oils after a period of time. This comes in a wood case with brass hinges , case measure's approximately 9 1/2 " long , 1 3/8 " deep, width 2", the charts and instructions are included . The Visgage is made of brass