Logarithmic Tables
First Devices
The first “Computer Manual”
Sectors
Conversion Devices
Slide Rules
Cylindrical Slide Rules
Circular Slide Rules
Troncet Type Devices
- site.Webb1869
- site.Stevenson1890
- site.Comptator1910
- site.GoldenGem1915
- site.Addiator1920
- site.Lightning1946
Keyboard Adding Machines
Arithmometers
True Multiplying Calculators
Proportional Rod Calculators
Pinwheel Calculators
Comptometers
- site.Comptometer”Woodie”1896?
- site.ComptometerOilBottle1907
- site.SumlockDemonstrator1955
- site.SumlockComptometer1950s
Curta Calculators
Motorised Calculating Machines
Electronic Calculators
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Ephemerae
Pages linked to this page
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