IWA 05136 Fisher fuel gaz slide rule Governor 1968 France Germany USA

This plastic slide rule was made by IWA Germany with number 05136 for the American Company Fisher Controls. It was produced in the French language per the 1968 copyright. It is double sided, green with white slider, all plastic cursor and with the a little shorter leather case (but I assume original), printed with the name of the “Elliott – automation” company logo. This slide rule is for the Governor product line, but there is aIso an additional plastic inlay sheet with calculations for the Papillon product line. Everything is in great condition with minimal signs of use and age. It measures ca. 28 cm or 11 1/4 inches. Do check the video below on how to work your vintage man tool : slide rule operation instructions!