Antique Boxwood Slide Rules

Four Sides Four Slides Gauger's Slide Rule (c1770)

Two Sides Two Slides Alcohol Slide Rule (c1840)

Two Sides One Slide Alcohol Slide Rule (c1840)

Carpenter's Folding Slide Rule (Rabone) (c1860)

Vintage Straight Edge Slide Rules

Early A. W. Faber Slide Rule (c1900)

Keuffel & Esser N4053-3 (c1937)

Keuffel & Esser 4081-3 (c1958)

Faber-Castell Addiator 111/54A Darmstadt (c1963)

Cylindrical Slide Rules

Fuller Calculator - Type I (1954)

Otis King's Pocket Calculator - Model K (1960)

Circular Slide Rules

Calculigraphe Circular Slide Rule (c1890)

Halden Calculex Circular Slide Rule (c1915)

Fowler Magnum Long Scale Calculator (c1940)

Russian Circular Slide Rule KL - 1 (1968)

Adding Machines

Gem Adding Machine (c1930)

Lightning Adding Machine (1953)

Arithma Addiator (c1962)