Calculating rule by Lenoir in centimetres with conversions
1800-1830
AVRO Shackleton Centre of Gravity Computer
1950
Slide rule by Robert Bissaker
1654
AviatJet 647 Aristo Air Navigation Computer.
1970-1975
Dipstick and Slide Rule
1850-1870
Cook Slide Rule
1825-1834
Faber-Castell Slide Rule
1920
Slide Rule
1960-1965
Ronchetti linear slide rule
circa 1847
Unique Electrical Slide Rule
1935-1950
Circular Calculator
1900
Wollaston slide rule of chemical equivalents, 1814.
1814
Fowler "Jubilee Magnum" Scale Calculator
1948
Fowlers Textile Calculator
1932
Fowler Vest Pocket Calculator
1950-1955
Circular slide rule by Troughton and Simms
1877
Lord's Calculator
1880-1885
British Thornton Slide Rule
1967-1975
Fowler's "Magnum" Calculator
1938-1943
PIC Slide Rule
1955
Boxwood Harrow Mark Reducer slide rule by E.S.A.
Slide rule
Slide rule for sarking and flooring
Linear slide rule with scale marked "fiction"
Slide rule
1800-1805
10-Inch Commerz Junior 0907 Aristo slide rule from the 1973 catalogue
1970-1975
10-Inch JuniorTrig 0902 Aristo slide rule from the 1974 catalogue
1970-1875
10-Inch StudioLog 0969 Aristo slide rule from the 1973 catalogue
1970-1975
5-Inch MultiLog 870 Aristo slide rule from the 1973 catalogue
1970-1975
5-Inch Reitz 89E Aristo slide rule from the 1973 catalogue
1970-1975
10-Inch Studio 0968/400g Aristo slide rule from the 1973 catalogue
1970-1975
10-Inch Darmstadt 967 Aristo slide rule from the 1973 catalogue
1970-1975
Slide rule
1791-1859
Slide rule
Martin's calculating slide rule
Sliding Scale of Equivalents for Weights
1801-1850
Slide rule with two slides, boxwood
1876
Three foot boxwood slide rule with one slide
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
Hemmi 'Sun' (20-inch) slide rule
1950-1960
'Musigraph 100', slide rule for music theory
1985
10-Inch Surveyor Aristo slide rule
1970-1975
Burt's Slide Rule for reducing superficial measurements to inches
1887 patent
Engineer's slide rule, boxwood
1790-1819