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slide rule on a green background
Close up detail of a log/log slide rule isolated on a black background.
Compilation of several slide rules, analog calculators, and measurement devices
Macro image of old scratched slide rule - an old mathematical tool for calculations from before the era of electronic calculators.
Vintage logarithm ruler close up isolated on a white background
Property deeds in canvas binders from a government records center
old vintage slide rule on white, isolated
Ruler
A Vintage Nostalgic Mathematics Calculating Slide Rule.
Representing the passage of time, close-up of a sundial in the Cuban municipality of Rafael Freyre which is situated in Holguin Province.
Two hands holding a slide rule or slipstick
Good Curling! Scoreboard for a curling game.
Slide rule, close up
Compass is casting a shadow on a table in the sun
A slide rule with white background, for mathematical calculations
plastic vernier caliper
Slide ruler vintage measuring instrument and calculator
Macro close up of a geometry set
Logarithmic ruler on white background. Stationery for engineers and students
View of the wooden ruler and the millimeter and centimeter scales with red and black numbers. A measuring instrument for craftsmen and do-it-yourselfers
old slide rule slipstick analogue computer for mathematical calcululs, top view
Plastic instrument for measuring linear dimensions in approximation
Fifty. Tailor's wooden meter ruler on black background.
Group of wooden yard sticks and meter sticks with black background.
Father showing his son how tall is he
Logarithmic ruler on black background. Stationery for engineers and students
Closeup of a 1940's -era radio dial
ancient wooden ruler on white, isolated
LV Medical - Equipment in an Emergency room. Blood pressure, monitors, weight scale, empty bed and statistics on monitors all help tell the story of an ER visit.
Free Images: "bestof:Keuffel & Esser Model 4180, Fraction Adder - MIT Slide Rule Collection - DSC03616.JPG en MIT Slide Rule Collection MIT Museum Cambridge Massachusetts USA The"
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