Explore stanley smith's board slide rules on pinterest | see more ideas about slide rule, history and mechanical calculator. After seeing phil b's making your own slide rule, i went on a huge slide rule kick i did a lot of research on them, and when i did, i discovered that there are. Before the smartphone, the laptop and the pocket calculator, there was a powerful mechanical computer our new series, tools of the trade, begins with a look at the slide rule. Tina's circular slide rules home page abaci addiators circular slide rules pocket watch fxr inc smith chart and circular slide rule speedivac calculator to determine the time to evacuate a vacuum system using a rotary pump edwards high vacuum ltd crawley, sussex. Otis king patent calculator model l - cylindrical pocket slide rule with helical scales, photos and text. They actually called it the slide rule calculator or even the electronic slide rule (texas instruments called one model that) every engineering student immediately wanted to buy one as with many collectibles, rarity drives the value of vintage slide rules.

All in one slide rule r22 & r410a superheat & subcooling charging duct calculator air conditioning and hvac troubleshooting. Make your own slide rule you will need: a scientific or graphing calculator scissors a slide rule is a tool that math students used to multiply and divide before there were calculators (your parents or grandparents may have used them. The prices for a scientific pocket calculator--the calculators that can do trig functions but did not become as popular as the familiar straight slide rules making a slide rule at home is not recommended not only are the mechanical arrangements difficult. Hate when your stupid calculator runs out of batteries well go oldschool with the classic slide rule do complex calculations in a flash go slide rules this instructable will only teach you how to multiply, and do functions with pi the rest you will have to figure out on your own. The slide rule as an aid in calculation, with a short description of some other labour-saving methods employed by the modern calculator with numerous examples worked out.

Slide rule style calculators & wheel calculators that is hand held rotating calculator. Speed was not a characteristic of the slide rule, nor of the mechanical calculator: the slide rule required effort and time for setting and reading values on a scale slide rules the slide rule was strong in conversions with a constant factor.

The original mobile appsâ„˘ july 6, 2017 update: eight new cardboard slide rule calculators added, thanks to neil blaho some were from his father's collection dating back to the 1950s. Custom imprinted maple wood slide rule calculator with crystal styrene index slider with magnifying indicator line each slide rule come in a clear 4 mil poly sleeve and is lacquer coated.

The best slide-rule-style flight computer on the market, now enhanced mark i nuclear attack calculator for point targets booklet, circular slide rule, and letter in envelope 1970 by n/a currently unavailable free shipping.

You have to understand one thing very clearly: a slide rule only gives an approximate answer, ie maybe 3 significant figures a calcular too only gives approximate answers, but usually 8 or more significant figures for most practical purposes. Fuller's spiral cylindrical slide rule previous next sliding cylinder is marked near the top: fullers spiral slide rule near the bottom is marked: entd stats since the calculators were the property of the shipyard it is most likely that i used one of the same calculators from that. Find great deals on ebay for slide rule and baker microscope shop with confidence. Such calculators became known as slide rule calculators since they could perform most or all of the functions on a slide rule at several hundred dollars, even this was considered expensive for most students. Explore mark mcnaney's board slides rule on pinterest | see more ideas about ruler, slide rule and calculator. The hp-35 slide rule calculator was first introduced in the mid-1970's,and sold for $295 this calculator started the demise of the slide rule industry.

This slide rule calculates the volume of sand, asphalt, concrete, stone or other building material needed this is a great tool for contractors, building material suppliers and anyone involved in the construction industry custom made slide rules slide calculators. Introduction this isn't really a tutorial, it's more of a self-guided demo this page gives numeric examples of the basic calculations that a slide rule can do. The apex instruments slide rule stack calculator can be used to find both proper nozzle size and sampling rate when the calculation of k factor is complete, the slide can be locked into place and the ap and ah scales are properly aligned for isokinetic sampling. High_rolla writes how many of you have actually used a slide rule the slide rule was a simple yet powerful and important tool for engineers and scientists before the days of calculators (let alone pcs) in fact, several people i know still prefer to use them in the interest of preserving this ico. Ohmite parallel resistance calculator 1949, double sided on one side it has several scales to compute parallel resistance it also has a standard slide rule. Geometry/structure: this is a picture of a basic beginner's slide rule for various math operations including mutiplication/division and square/squareroot. Hvacchartscom is your source for superheat, subcooling and a variety of other refrigeration calculators.

Calculator and slide rule

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