Hi. You are bidding on a vintage Pickett All Metal slide rule, model number N 600 ES 6 Inch with leather case and original instruction book. The slide rule appears to be lightly used. The set includes the original instruction book which is titled."How to use log log slide rules". The rule comes in a nice brown leather case and the original box has the original guarantee and registration card in it. The outside of the box is worn and has some tape marks on the one end.Please e-mail with specific questions before bidding. Buyer pays actual priority shipping with insurance extra. Checks and money orders accepted, with checks held to clear. Kentucky residents need to add 6% sales tax please. Thanks for looking and GOOD LUCK! Check out my other items ! Be sure to add me to your favorites list !