Calculating rule by Lenoir in centimetres with conversions
1800-1830
Slide rule, "System Rietz", by Sun Hemmi, Japan
Slide rule by Robert Bissaker
1654
AVRO Shackleton Centre of Gravity Computer
1950
Wollaston slide rule of chemical equivalents, 1814.
1814
Lord's Calculator
1880-1885
Faber-Castell Slide Rule
1920
PIC Slide Rule
1955
Fowlers Textile Calculator
1932
AviatJet 647 Aristo Air Navigation Computer.
1970-1975
Cook Slide Rule
1825-1834
Slide Rule
1960-1965
Ronchetti linear slide rule
circa 1847
Unique Electrical Slide Rule
1935-1950
Circular Calculator
1900
Fowler "Jubilee Magnum" Scale Calculator
1948
Fowler Vest Pocket Calculator
1950-1955
Slide rule for calculation of treadwheel labour
1823
Circular slide rule by Troughton and Simms
1877
British Thornton Slide Rule
1967-1975
Fowler's "Magnum" Calculator
1938-1943
Sheppard's cubing slide rule, boxwood
1876
Nestler Slide Rule for Chemists
Slide rule for sarking and flooring
Linear slide rule with scale marked "fiction"
Slide rule
Rietz 109 Aristo slide rule 20-Inch
1970-1975
Piccolo 816 Aristo slide rule 4-inch
1970-1975
Studio 01068 Aristo slide rule 20-Inch
1970-1975
Darmstadt 1067U Aristo slide rule 20-Inch
1970-1975
Aristo 630 Chemie circular slide rule and calculator
1970-1975
Model 4/87 Rietz 20-inch slide rule by A.W.Faber-Castell
1955-1960
Engineer's slide rule, boxwood
1790-1819
Radiation slide rule for calculating energy in Planck functions
1950
"Unique" 7-inch slide rule
Fullers spiral slide rule
"Otis King's" cylindrical slide rule for calculating percentages
circa 1950-1965
Two wooden slide rules with identical scales
Bate's sliding scale
11-Inch slide rule
1800-1900
Rietz slide rule
1970-1975
wooden slide rule
wooden slide rule
wooden slide rule
Aristo-Scholar, 0903-VS slide rule
1970-1975
Pilot balloon slide rule Mark IVA, Met Ref No 868A, MO 2792/56, in pine wood case
1956
Welsh's slide rule, for Magnetic observation
Slide rule stamped A.G.Thornton Ltd.
1946
Pilot balloon slide rule Mk II
1940
Pilot balloon slide rule Mk IVA
1965