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Item number: 14611 How to Use the Deci-Log Log Slide Rule : Pickett & Eckel, Chicago, 1947 Author: Hartung, Maurice L Publisher: Pickett & Eckel; Chicago: 1947 Very Good- Softcover 32 pages; 8vo (8.5") 22 cm; This is a slim 32-page softcover (self-wraps) booklet, fold-and-staple binding, with instructions and sample problems, plenty of tables and lists, 11 b/w diagrams. ; Laid in: How to Keep Your Slide Rule a Perfect Precision Instrument, published with booklet, single slip of paper printed one side only.
Vintage Pickett All Metal Slide Rule model N4-ES vector type Log/Log Dual-Base Speed Rule, Made in the USA by Pickett & Eckel, Inc. of Chicago, Copyright 1959 Patent Applied For. 12" long x 2 1/8" wide comes with authentic brown leather case. Near mint condition, see photos for detail.
Item number: 15441 How to Use the Pickett Model 20 Basic Slide Rule : In 3 Easy Steps (Book and Slide Rule Set) Author: Hartung, Maurice L. Publisher: Pickett & Eckel Inc; Chicago: 1955 Good Softcover 32 pages; 8vo (8.5") 22 cm; White and red leatherette covers, fold-and-staple binding, 4 appendixes, dozens of sample problems with answers at chapter ends, 26 b/w figures and diagrams. ; Published in 1955 by Pickett & Eckel, Inc, Chicago, Illinois. ; Booklet is visibly worn, vertically creased from being