Image
Category
Collection
On Display
Object type
Material
Maker
Place
Date
Ready reckoner

Ready reckoner

1990

Ready reckoner (weights and measures)

Ready reckoner (weights and measures)

1972-1976

Arithmetical medal and numerical pocket piece

Arithmetical medal and numerical pocket piece

1753

"McFarlane's Calculating Cylinder" (c. 1833)

"McFarlane's Calculating Cylinder" (c. 1833)

1833

"The Model Ready Reckoner"

"The Model Ready Reckoner"

1867

"The Readiest Reckoner in miniature"

"The Readiest Reckoner in miniature"

1824

Robertson's 'Rapid Calculator', c 1910.

Robertson's 'Rapid Calculator', c 1910.

1910-1920

"The Banker's Sure Guide or Monied Man's Assistant"

"The Banker's Sure Guide or Monied Man's Assistant"

1791

Equation of Time Calculator, French, 1816

Equation of Time Calculator, French, 1816

1816-1821

The 'Multiplicateur Enfantin' ready reckoner, c 1880.

The 'Multiplicateur Enfantin' ready reckoner, c 1880.

1876-1884

Bate's ready reckoner

Bate's ready reckoner

1824

Parker's Prestometer Tablet, mid 19th century

Parker's Prestometer Tablet, mid 19th century

circa 1860

The "Proell" pocket calculator

The "Proell" pocket calculator

Klinkerfues ready reckoner calculator for psychrometers, 1870-1876

Klinkerfues ready reckoner calculator for psychrometers, 1870-1876

1870-1876

Aristo 10076 chemist conversion ready reckoning rule for temperature

Aristo 10076 chemist conversion ready reckoning rule for temperature

1970-1975

Seyler's coal calculator

Seyler's coal calculator

1934

Blundell Rules Limited C24 'Cost & Profit Reckoner'

Blundell Rules Limited C24 'Cost & Profit Reckoner'

1955-1965

Scherer's "Logarithmischgraphische Rechentafel"

Scherer's "Logarithmischgraphische Rechentafel"

1880-1892

Circular ready reckoner calculator for pump pressure drop with various viscous fluids by Plenty & Son Limited

Circular ready reckoner calculator for pump pressure drop with various viscous fluids by Plenty & Son Limited

1960-1965

Circular A61 Re-order Point ready reckoner calculator

Circular A61 Re-order Point ready reckoner calculator

1965-1975

Ready reckoner (musical)

Ready reckoner (musical)

1785-1790

The 'Tachylemme' ready reckoner, c 1876.

The 'Tachylemme' ready reckoner, c 1876.

circa 1876

Ready reckoner with cursor

Ready reckoner with cursor

The 'Tachypoly Plasiasme' ready reckoner,  1880-1884

The 'Tachypoly Plasiasme' ready reckoner, 1880-1884

1880-1884

Hines' 'Patent Weight and Quantity Calculator', c.1908.

Hines' 'Patent Weight and Quantity Calculator', c.1908.

circa 1908

Battenburg's speed and distance scale by Elliott Bros.

Battenburg's speed and distance scale by Elliott Bros.

Gripalculator slide rule patent no.335379 of 1929

Gripalculator slide rule patent no.335379 of 1929

Aristo 10075E dyers ready reckoning conversion rule for temperature

Aristo 10075E dyers ready reckoning conversion rule for temperature

1970-1975

Aristo 10075 dyers ready reckoning conversion rule for temperature

Aristo 10075 dyers ready reckoning conversion rule for temperature

1970-1975

C.D. Indicator

C.D. Indicator

White & Bean's area scale on transparent celluloid

White & Bean's area scale on transparent celluloid

1907

Unit conversion slide rule and metric unit converter in slide-rule format, plastic, made in 1975 by IWA-Rechenschieberfabrik, Esslingen, West Germany

Unit conversion slide rule and metric unit converter in slide-rule format

1975

"Toutechnique" protractor-calculator, (quadrant of transparent plastic material; 6-inch radius)

"Toutechnique" protractor-calculator

Three card slide rule ready reckoners by Omaro, Paris: transmission drive calculator, model I.1 (1935); gear-tooth ready reckoner, model T.3 (1932); mild steel ready reckoner, model P.12 (1935)

Three card slide rule ready reckoners by Omaro

1935-1939

Cullum's Calculator

Cullum's Calculator

McFarlane's calculating cylinder

McFarlane's calculating cylinder

Selection of four ready reckoners, for assisting the conversion from L.s.d. to decimal currency and from imperial to metric measures.

Selection of four ready reckoners

1972-1976