2 Circular Slide Rules, incl. Eckel Engineer's & RotaRule 510

1st item: Eckel Dial-O-Matic Engineer's or Engineer's Log Log slide rule, manufactured by Lithocalculator Company, Arcadia, California, circa 1955. Comprised of two celluloid-coated aluminum disks, on

Seven (7) circular slide rules, including Dietzgen 1798 Dempster RotaRule Model AA, Loga. 1st item: Dietzgen 1798 Dempster RotaRule Model AA 50-Inch Pocket slide rule, designed and manufactured by Jac

Also includes: Goodell-Pratt Company hand drill, Stanley reticulated drill, K & E Log Log Duplex slide rule and Pickett slide rule.

Five (5) early calculators or slide rulers, including one (1) G. Small Pocket Calculator, Roberts Everard type box rule, G. Charpentier Calculimetre, Sexton's Omnimetre Circular Slide Rule, and one (1

Five (5) Pocket Watch Style Logarithmic Circular Slide Rule Calculators, including four (4) Fowler's calculators, 5 items total. 1st-4th items: Four (4) Fowler and Company, Manchester, England, calcul

1920s Halden Calculex circular slide rule, from J. Halden and Co. Case not included, measures 2 1/4" across.

PICKETT DIAL RULE CIRCULAR SLIDE RULE 101-C WITH CASE AND BOOKLET | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE

THE BINARY CIRCULAR SLIDE RULE COPYRIGHTED 1931,1940 WITH BOOKLET | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE

2 SLIDE RULE ACU-MATH NO. 400 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE DAMAGED (SEE IMAGE) -HS5721

The Engineers Slide Rule, made in USA by E. M. Scofield, Bridge Engineer, Youngstown, Ohio. Patent 1901-1902. Comprised of paper scales on boxwood. 24" L x 2" W x 1/2" D. Provenance: Private West Tenn

3 SLIDE RULERS. PICKETT & ECKEL NO 33 ,A&W SLIDE RULE, STERLING SLIDE RULE PRECISION | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH

2 Logarithmic Calculating Drums 1) Professor Fuller's Spiral Slide Rule Calculator, 1889 onwards, made in England by Stanley, with wood handle, in mahogany case. - And: 2) Calculator Loga, 23 3/5 in.

A Rare Slide Rule Snuff Box, French, early 19th century, the tortoiseshell and bois durci circular box with ivorine veneer scale, the top and base with moulded relief scenes of the Louvre and Pont de

Also includes Zippo lighter, gavel, carved box, and 12 in Engineers' Triangular Scale. JK IMPORTANT: Before bidding, please read the terms and conditions. When you registered for the auction you agree

(2) BOXES BOOKS INCL. REPORT OF THE CHIEF OF ENGINEERS, AGRICULTURAL SOCIETY & OTHERS

Calculation for Steam Power. Boxwood and Brass. 13.5"L x 2-1/2"w.

2 trays French Soldiers incl Dragoon Regiment of Lusitania, Knight w/ Lance, french Navy, Guard of Richelieu of 1610-1643, Marines of Guard, Italian Bersaglieri 1930, Napoleonie Engineers of the Guard

Assembled group of ten (10) Chinese enameled cloisonne snuff bottles with cloisonne lids including one (1) double circular form bottle with bird and flowering branch decoration; two (2) shield forms,

Also includes: (2) New Catechism of the Steam Engine, 1904; Handbook of Calculations for Engineers & Firemen, 1901; Internal Combustion Engines, 1907; Steam-Turbine Principles & Practice, 1940; Steam

LOT (2) INCL. RARE EARLY ERIE RAILWAY LANTERN W/CAST CLEAR GLOBE (IMPERFECT)/PAULL'S NO. 0 FIRE TRUCK LANTERN, 19TH C.

Filotecnica Model 201 Back-Light Screen Projection Slide Rule, Italy c. 1955 In the early 1950s the company Filotecnica Salmoiraghi, well known for its precision equipment, developed a slide rule that

Rule

English, c. 1820, in boxwood and brass, double sided with numerous finely divided logarithmic scales and early form of cursor, time side with scales marked Half Sum, Lat, Diff, Time PM, Time AM, cu gr

Keuffel & Esser (K&E) 4090 universal slide rule, PN 19-19-19-19-19-19. Marked "Keuffel & Esser Co. N.Y., Pat. Oct. 6, 1891". Comprised of two-sided white celluloid coated mahogany, black metal framed