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Datsun Discussion Forum

A forum for restorers, collectors, drivers and enthusiasts!

Datsun “slide chart” pocket calculators

August 19, 2014 by Greg

Long before the Internet, and even before the hand-held calculator, people needed a way to make quick calculations without doing a lot of mathematical computation. The slide rule, a 17th-century device, rapidly became the most commonly used calculation tool in science and engineering.

pickett_slide_rule

The slide rule was the inspiration for countless pocket calculators, referred to as “slide charts.”

Typically made of cardboard or plastic, a slide chart was typically task-specific, and these handy devices could be tucked in a pocket for quick reference. For decades, the slide chart was the go-to gadget for engineering, aviation, photography, finance, construction, machine work, surveying, and even cooking!

An example of a common slide chart:
slide_chart_1

Of course, it goes without saying that there are people who collect these, and they’re still used in certain industries today. But we’re interested in Datsun collectibles, so here’s a few Datsun-specific slide charts that I think you’ll find interesting – Enjoy!

datsun_engine_analysis_specifications_1

datsun_engine_analysis_specifications_2

datsun_engine_analysis_specifications_3

datsun_engine_analysis_specifications_4

datsun_fuel_mileage_calculator

datsun_side_bearing_shim_calculator_1

datsun_side_bearing_shim_calculator_2

datsun_side_bearing_shim_calculator_f

datsun_side_bearing_shim_calculator_r

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