Mathematical tools

thumb|An electronic pocket calculator with a seven-segment display|seven-segment [[liquid-crystal display (LCD) that can perform arithmetic operations]] thumb|upright=.6|A modern scientific calculator with a dot-matrix display

thumb|Bi-quinary coded decimal-like abacus representing

thumb|right|upright=1.3|A variety of rulers thumb|right|A carpenter's rule thumb|right|Retractable flexible rule or tape measure thumb|right|A closeup of a steel ruler thumb|A ruler in combination with a letter scale

drafting instrument for drawing arcs and multiplying distances

mechanical machine for arithmetic operations for absolute calculators

thumb|A typical parallel-scale nomogram. This example calculates the value of T when S = 7.30 and R = 1.17 are substituted into the equation. The isopleth crosses the scale for T at just under 4.65.

are archaeological artifacts discovered in Congo and

ancient memory aid device used to record and document quantities

A planimeter, also known as a platometer, is a measuring instrument used to determine the area of an arbitrary two-dimensional shape.

template made from metal, wood or plastic composed of many different curves; used in manual drafting to draw smooth curves of varying radii

table used to quickly evaluate mathematical functions

An integrator in measurement and control applications is an element whose output signal is the time integral of its input signal. It accumulates the input quantity over a defined time to produce a representative output.

East Asian numeral system

thumb|right|An ornate 18th century iron straightedge A straightedge or straight edge is a tool used for drawing straight lines, or checking their straightness. If it has equally spaced markings along its length, it is usually called a ruler.

Artifact

mechanical analogue computer designed to solve differential equations by integration

thumb|A sketch of Quipucamayoc from [[El primer nueva corónica y buen gobierno. A yupana is shown in the bottom left.]] thumb|An Inca "table yupana" artifact, possibly unrelated to the historical calculating instrument

paper with a grid or other print to support drawing mathematical graphs

Tool for trisecting angles

primitive calculating device

table using constrained sand for modelling or educational purposes

tool used in the study or practice of mathematics

right|thumb|Integraph per Abakanowicz design, 1915 catalog drawing right|thumb|Coradi of Zurich's integraph, 1911 drawing

calculating method used in ancient China