Ke Vector Slide Rule Wcase Box Manual Mint

Here is the scarce collectible quality k & e log log duplex vector slide rule you have been waiting for. Included with the rule is the leather hard case, manual, and original k & e outer box. The ruel case and manual are in mint condition, and the box is pretty close. The ruel is constructed of baked enamel over a wood base and bears a k & e copyright date of 1947.