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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
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old vintage slide rule on white, isolated
Belarus Ballet National Theatre Pattern Design on Belarusian Banknotes
Logarithmic ruler on black background. Stationery for engineers and students
Sliding caliper with dollar sign coin.
Slide rule, close up
Silver Bar
Slide ruler vintage measuring instrument and calculator
Representing the passage of time, close-up of a sundial in the Cuban municipality of Rafael Freyre which is situated in Holguin Province.
A slide rule with white background, for mathematical calculations
plastic vernier caliper
Two hands holding a slide rule or slipstick
Ruler
old slide rule slipstick analogue computer for mathematical calcululs, top view
Number 50 Pattern Design on Banknote
Logarithmic ruler on white background. Stationery for engineers and students
British currency
Plastic instrument for measuring linear dimensions in approximation
low quality plastic measuring tool
A Vintage Nostalgic Mathematics Calculating Slide Rule.
Property deeds in canvas binders from a government records center
close up of a measurement scale on metal with centimeters and inches
$1 Food Coupon. Grunge and textured details. Issued first in 1989. Same monetary value as U.S. currency but can only be used to buy food. Given by the government to people in need. Serial number has been altered, to protect the poor.
Logarithmic ruler isolated on white background. Stationery for engineers and students
A compass rose and a calculator rest on top of a 401K statement. Photographed with a very shallow depth of field.
Free Images: "bestof:Currency Conversion Scale - MIT Slide Rule Collection - DSC03628.JPG en MIT Slide Rule Collection MIT Museum Cambridge Massachusetts USA The museum permitted"
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