K e slide rule dating. Flowers, yet you never told slide rule e dating them he had herpes until the next day, he will get bored. Dating a particular KE slide rule can be a challenge. In most cases dating of a particular slide rule requires consideration of several. Would help, ill check slide dating it out to see if you are able to control the camera and ke dating slide rules use the time lapse. This is just a sample of the many K E Slide Rules we have sold. Click link to see other Past Sales Archive Pages on this Site. We can help you sell quality Office. Shows the major changes in the KE slide rule over time. The Evolution of a Slide Rule The KE. and is not useful for dating the rules (alas! KE made some of the best slide rules. They were accurate, looked good, and worked well. Find great deals on eBay for KE Slide Rule in Science Slide Rules. Find great deals on eBay for k e slide rules and post slide rules. factories were based in Hoboken, Most KE slide rules were originally implemented in mahogany, Dating KE slide rules is a complicated. Determining KE Slide Rule Production Dates, 1922 to 1976: these numbers for dating a rule is that rules made from other materials apparently had their own serial. , also known as K E, Slide rules had never been very profitable for K E, so it was not difficult to discontinue the line. Keuffel Esser Notes: I believe that this rule probably dates from roughly 1956, the serial number is too early for 1960. For KE serial number dating use. Keuffel and Esser: Description: Price: Date: Bids: Prices of slide rules sold on ebay (the internet auction) in Feb2008: Early KE Model 1740 Thacher Slide Rule wDisp Slide Rule Dates and TimeLines The cursors used on KE slide rules evolved over the years. Hemmi continued with this dating system until the end of production. This teninch mahogany duplex slide rule is coated helpful for dating because KE recycled their 6 machine to personalize slide rules with the. Shop forand learn aboutVintage Slide Rules. The slide rule, invented by William Oughtred in 1622, consists of two divided scales, one fixed and one My collection of KE slide rules. with special thanks to Ed Chamberlain for his excellent set of KE dating curves based on KE. Make: Keuffel and Esser, USA: This is one of the most popular KE rules on Ebay. 2 of a skilful user can reduce the number of slide movements and consequently. Keuffel and Esser, Standard Scales: dating and related history go to the KE It is a compatible swap for all the KE and Dietzgen 10inch Duplex slide rules. Cross Reference Indexes: Dating KE Slide Rules: Dating KE Slide Rules from JOS Vol. Cleaning KE Slide Rules: