3 strike rule dating

Keuffel & Esser Co., Hoboken, New York, sold and manufactured slide rules, drawing instruments and other technical supplies.

Established in 1884, sold rules from 1886, began manufacturing their own rules in 1891 and continued until 1976.

An improved cursor for a 0.250inch (-3) thick stock was used, with spacers cut out of an old credit card.

An Xacto knife and a pair of scissors can be used to shape the spacers. Jesse (Bud) Blount Lyon (1943-2014) purchased this slide rule while attending Durham High School. He attended University of North Carolina was later employed by Monsanto Company in Research Triangle Park, NC for several years before moving to Baltimore, MD and worked as a metallurgist for the Baltimore Gas and Electric Company for 27 years. Lyon lived in Pasadena, MD until relocating to North Myrtle Beach, SC in 2003.

He again used a slide rule to obtain his masters degree in physics from the University of Wisconsin in Madison, WI. - Note difference in Cursor frame: Bright Metal framed cursor Front Scale A [ B, C ] D Back Scale [ S, L, T ] Previous owner: A loaner from a school's Textbook Department. by Keuffel & Esser Co., New York Patent Markings: Oct.

, C ] D, LL3, LL2 Note: This 20" (-5) slide rule needed a new cursor but cursors for 0.312inch thick stocks are very hard to find, except on other 20" slide rules.The couple relocated to the Puget Sound area in 1973 to work as a physicist for the Navy at Keyport, Washington for the next 33 years where he retired at age 75. K&E Early Import Made in France for K&E by Tavernier-Gravet Front Scale 20cm // A [ B, C ] D

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Mine is a beauty - a K&E 20-inch Log-log Duplex Decitrig" .

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  1. That this advice is useless when actually trying to solve a problem involving a real box should effectively have killed off the much widely disseminated—and therefore, much more dangerous—metaphor that out-of-the-box thinking spurs creativity.