In the history of measurement many distance units have been used which were based on human body parts such as the cubit, hand and foot and these units varied in length by era and location. [4] In the late 18th century the metric system came into use and has been adopted to varying degrees in almost all countries in the world. lesbian rule". Oxford English Dictionary (Onlineed.). Oxford University Press. (Subscription or participating institution membership required.) (subscription required) Anton Ullrich invented the folding ruler in 1851. Frank Hunt later made the flexible ruler in 1902. [7] Curved and flexible rulers [ edit ]

A Online ruler software program can be used to measure pixels on a computer screen or mobile phone. These programs are also known as screen rulers or online ruler. [3] It is used to measure the actual size of an object in inches, centimeters, or millimeters.

Branded Stationery For Any Workspace

Russell, David R.; with photography by James Austin and foreword by David Linley (2010). Antique Woodworking Tools: Their Craftsmanship from the Earliest Times to the Twentieth Century, Cambridge: John Adamson ISBN 978-1-898565-05-5 OCLC 727125586, pp.64–74 Flexible Ruler Invented by Frank G. Hunt". National Museum of National History. Archived from the original on 30 June 2016 . Retrieved 7 June 2016. Plastic rulers and carpenter wooden rulers are stationery items that get passed around. This is true of any office where people regularly borrow them. They will be passed around by many people, giving them the chance to see your brand and logo. 2. Rulers come in all sizes and styles! Desk rulers are used for three main purposes: to measure, to aid in drawing straight lines, and as a straight guide for cutting and scoring with a blade. Practical rulers have distance markings along their edges.

Find sources: "Ruler"– news · newspapers · books · scholar · JSTOR ( November 2023) ( Learn how and when to remove this template message) Equally, a promotional ruler printed with your company’s logo is great for creating some brand awareness amongst customers, too. They’ll think of your business every time they reach for it - hello, instant brand awareness! The equivalent of a ruler for drawing or reproducing a smooth curve, where it takes the form of a rigid template, is known as a French curve. A flexible device that can be bent to the desired shape is known as a flat spline, or (in its more modern incarnation) a flexible curve. Historically, a flexible lead rule used by masons that could be bent to the curves of a molding was known as a lesbian rule. [8] Philosophy [ edit ] A ruler and compass construction refers to constructions using an unmarked ruler and a compass. It is possible to bisect an angle into two equal parts with a ruler and compass. It can be proved, though, that it is impossible to divide an angle into three equal parts using only a compass and straightedge— the problem of angle trisection. However, should two marks be allowed on the ruler, the problem becomes solvable.

Ludwig Wittgenstein famously used rulers as an example in his discussion of language games in the Philosophical Investigations (1953). He pointed out that the standard meter bar in Paris was the criterion against which all other rulers were determined to be one meter long, but that there was no analytical way to demonstrate that the standard meter bar itself was one meter long. It could only be asserted as one meter as part of a language game.