Two examples are abacus and slide rule
abicuss
A website called Mini Web Tool has a long list of financial calculators online. They have mortgage calculators, auto loan calculator, calculate interest calculators, credit card calculator, ROI calculators, profit to sales ratio calculator, and many more. They have calculators for almost every need.
calculators and rulers are important math tools
Personal loan calculators can be a helpful tool for generating estimates. However, you should always check with a financial professional before moving forward.
There are car loan calculators available online. It is handy tool for figuring out what kind of loan that you can afford to have. Here is a website that will help: www.onlineloancalculator.org/
There are many mathematical tools. Arithmetical computation is one that is used daily.
An abacus is an ancient mathematical tool invented by the Japanese.
Interest Calculators are a very important tool to insure you keep your finances straight. There are several sites that offer interest calculators, but the best 2 you can find are located on the Interest and Money Chimp official websites.
The Financial Consumer Agency of Canada has a credit card payment calculator tool available on their website. CreditCanada and CalculatorWeb.com also have these calculators available on their website.
You can use a specialized tool called a "return on investment calculator." One of these special tools can be found here: http://www.money-zine.com/Calculators/Investment-Calculators/Return-on-Investment-Calculator/ It takes the amount of the original investment, the future value of the investment, and the time elapsed into account.
Cartesian coordinate
Calculus is a mathematical technique: it is not a unit or tool for measurement.