Polyphase slide rule no 68 2063 william breckenridge the polyphase duplex decitrig slide rule lyman kells willis kern this is an early edition of the manual ke log log duplex slide rules ke after 1915 this instruction manual is for the 4092 and 4092 1 2 this is a later edition of the manual 4093 3. Dating k e slide rules is a complicated task as serial numbers were recycled three times at k e based on external clues from the body and cursor although caution is needed there as it may have been replaced as well as case and manual details and any copyright or patent dates it is possible to place the rule within one of the three . Slide rules in ke catalogs by model number 4143 10 kissam stadia slide rule 68 1497 4071 3 10 polyphase duplex decitrig sewed leather case 4071 3 family 68 1502 4071 3 10 polyphase duplex decitrig synthetic case log log duplex decitrig overhead projector slide rule demonstration slide rules 100. K and e slide rule with box and manual 68 1555 for sale online 2799 1947 book 1939 keuffel esser kande 4071 polyphase duplex decitrig slide rule manual only for sale online 1999 k e slide rule manual no 4081 log duplex decitrig keuffel and esser co 1947 for sale online 700
How it works:
1. Register Trial Account.
2. Download The Books as you like ( Personal use )