The Slide Rule Guy -- History of Slide Rule Records

The Slide Rule Guy
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The World's Slide Rule Records.
20 feet long overall weighing 110 lbs. constructed in 1973-74 by Ralph Nyberg and members of the Mathematics Club of Roanoke-Benson High School, Illinois. Guiness Book of World Records, 1976, Sterling Publishing Co, New York, NY USA.

59 feet 1 1/4 inches in length designed by Ralph J. Snelson and R. Clayton Brough and built by students at Springville Junior High School, Springville, Utah. Guiness Book of World Records, 1978, Sterling Publishing Co, New York, NY USA.

320 feet 11.1 inches in length completed in March, 1979, by students of Alvirne High School, Hudson, New Hampshire. Guiness Book of World Records, 1980, Sterling Publishing Co, New York, NY USA.

323 feet 9.5 inches in length completed on Nov 11, 1979 by Greg Maggs and Robert Kolstad at the University of Illinois College of Law Building in Champaign, Ill. Guiness Book of World Records, 1983, Sterling Publishing Co, New York, NY USA.