They also made a large range of drafting and related products, and even had offices here in Montreal. Dating K&E Slide Rules. Dating a particular K&E slide rule can be a challenge. In most cases dating of a particular slide rule requires consideration of several. Guide - Hemmi Date Codes.
In most cases dating of a particular slide rule requires consideration of several parameters. After Hemmi dropped the 'Made in Occupied Japan" logo in about they began placing date codes on certain rules. This code took the. Jirou Hemmi and Co.
I find it a very functional and aesthetically pleasing rule, especially with all that exposed mahogany wood on the back side. Hemmi of Japan made slide rules for a lot of other companies, especially Post. Not all of the slide rules received date codes, and slide rules in the 's. Amazing Digital Slide Rule : download for your phone, tablet or desktop an an awesome free simulation of a linearroundconcentric or drum slide rule.
Post sold a wide variety of slide rules, both under its own name and under the names of various manufacturers. the serial number series rollover dates and slide rule dating by Richard. The six digit numbers found on K&E slide rules after have been referred to as. My first serious rule was a Hughes-Owens Versalog model.
Other Slide Rule dates are currently in development. Overview of A.W. Faber-Castell Slide Rule Dating Chronology Colin Tombeur. Background. This article is one of a series which. There are inch and metric rulers on the edges and tables on the reverse.
Welcome to reduce the simple rules of manufacturing. The Frederick Post Company of Chicago began selling Hemmi slide rules in One can estimate dates of Hemmi slide rules from markings on the rules. Do you have something to share that would enrich our knowledge about this object?
Post slide rules marked Made in USA date from World War II, about to To our knowledge, that was the only period when Post rules were not imported.
Welcome to reduce the simple rules of manufacturing. Products, post brand slide rules could use a lot of japan made by various german manufacturers.