**Calculating the Quality of Vintage Slide Rules**

It's clear how to add or subtract two lengths using two ordinary rulers. Slide rules do the same thing, add and subtract lengths, Compared to a calculator, a slide rule is severely limited in its accuracy. You can enter and read a number typically to two or three decimal digits only. Scales . All other scales on a slide rule are referenced to the C and D scales. Following is a list of... It's clear how to add or subtract two lengths using two ordinary rulers. Slide rules do the same thing, add and subtract lengths, Compared to a calculator, a slide rule is severely limited in its accuracy. You can enter and read a number typically to two or three decimal digits only. Scales . All other scales on a slide rule are referenced to the C and D scales. Following is a list of

**Slide Rule Calculators for Construction Materials Slide**

1. slide the middle part of the slide until the first number you want to multiply by is on the "c" scale, and is lined up with the second number on the "d" scale (bottom slide).... A slide rule is a calculator, it just uses slides instead of buttons, and the operations are just as mystifying to most people. Similarly the operations on a calculator (or the standard algorithms we teach kids to use on pencil and paper) are just as mystifying.

**Concrete Volume Calculator Free to use online or**

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.) Here you will learn how to make your own! how to allow search engines in wordpress And the slide rule has become an electronic calculator. Take another look at that slide rule. Pull it out of the drawer you stashed it in 30 years ago or make one of your own [see box on next page]. You’ll see why it was once so valuable. Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine. A few seconds of ﬁ ddling let scientists and

**Using Your Supertech Slide Rule technique calculator**

Slide Rule Style Calculators are standard reference tools for many industries. They are simpler to use than conventional slide rules, more convenient than electronic calculators and less expensive than computers and smart phones. You can afford to put one in the hands of everyone who buys what you sell. how to calculate work with mass and velocity Fuller's Spiral Cylindrical Slide Rule Fuller's Spiral Cylindrical Slide Rule. Previous. Next >> Description This rule consists of an outer wooden cylinder that slides up and down and rotates. Two brass rings lined with felt are inside this cylinder. The cylinder is covered with paper marked with a single spiral logarithmic scale graduated into 7250 parts and having a length, according to the

## How long can it take?

### Basic Slide Rule Instructions The Museum of HP Calculators

- Addiator/Slide-rule Calculator
- Welcome to INFO AQL Inspector's Rule - Easing the job of
- Calculator vs Slide Rule vs Hand calculations – The
- Fuller's Spiral Cylindrical Slide Rule National Museum

## How To Use A Slide Rule Calculator

Dr. Drang is a pseudonymous engineer whose love of calculators stems from that week in junior high math class when he had to learn how to use a slide rule. He blogs at leancrew.com . Our Latest Posts

- Use the cursors to set the cosines then slide the main cursor to the cotangent scale to find the results. Tina's Bygrave. Homemade Cylindrical Position Line Slide Rule Mark II.
- If a calculator is not allowed then it is not likely the use of a slide rule would make much difference as the questions would take into account the absence of any form of calculator.
- "How to embed slide rule emulator"describes how to embed this emulator in you own slide rule related page. Sometimes described algorithms use uncommon scales (like BI scale) or exotic scale layouts (like trig scales both on slide and stock) or both.
- Other operations The other scales on the slide rule are used for other operations. The K scale: cubes and cube roots. To cube a number place the hairline on the number on the D scale.