$13.45

Vintage engineers' slide rule Faber-Castell model 1/87 System Rietz boxed German

$10.76

A.W. Fabers Castell Calculating Rule for School Vintage Sliding Wooden Ruler 339

$80

Sanitary Code Milk Ordinance Public Water Health Department 1940s Connecticut a

$185

DEFCON 24 HUMAN BADGE, Lanyard, Program booklet, CDs, Stickers 2016

$12.79

Vintage BRL Academy 300 10" Slide Rule in slipcase with instructions

$24.24

Helios Drafted 10/3B Compass Set Vintage

$48.99

VINTAGE USS STEEL EMPLOYEE SUGGESTION PLAN BOOKLET 1958

$119

DEFCON BADGE Defcon 22 Human PCB Badge - Year 2014. Includes original lanyard

$19.99

1960's Lapeer Manufacturing Company KnuVise Clamp Engineering Catalog Michigan B

$12.77

Thermodynamic Properties of Steam by Joseph Keenan & Frederick Keyes 1948 1st Ed

$89.95

1910 McKINLEY BRIDGE St. Louis MO Architect Drawing 245' 4" Deck Span Lithograph

$235.67

Very Rare, Antique Brass / Rosewood Level & Square, 14" (26X)