$305.62

Fine Antique Cased Surveyors Cross Staff Head or Panometer By Stanley London

$19.95

JULY 19, 1948 NEWSPAPER PAGE #2549- VERRAZANO NARROWS BRIDGE PROPOSED

$17.32

Vintage Unique Log Log Wooden Slide Rule w Original Case 1950s - Made in England

$52.96

Aristo Elektro Slide Ruler Nr 815 E Made In Germany In Original Leather Pouch

$40.74

Vintage Kronos 311 Compass Set Technical Drawing Drafting Tools Kit

$7

TELEPHONE NUMBER FINDER, Advertising from OMNI PIPE & STEEL, INC. St. Louis, MO

$27.17

Vintage Hilger & Watts Cowley Automatic Level With Original Case

$8

THE CONCRETE ENGINEER'S HANDBOOK, 1921

$10.19

Vintage A.W.Faber Castell 3 Sided 873c/Z4 Triangular Ruler With Case

$5.79

1945 Illustration ~THORNTON OAKLEY ~ Vitamin A Is Separated From Shark Liver Oil

$25.99

Vintage Slide Rule Calculator - WRIGHT'S - Refrigeration Head-Back Pressure LL5

$11.99

DuPont Thermodynamic Properties of Freon 503 Bulletin Catalog 1968