Editing Metrication (section)

===Manufacturing and engineering===
*Photograph and video cameras are standardised to mount to tripods using {{1/4}}-20 and {{frac|3|8}}-16 screws, which are dimensioned in inches, by ISO 1222:2010.<ref>{{cite web|url=http://webstore.ansi.org/FindStandards.aspx?SearchString=ISO+1222:2010&SearchOption=0&PageNum=0&SearchTermsArray=null%7CISO+1222:2010%7Cnull|title=Find Standards using keywords and publication number|first=American National Standards Institute|last=ANSI|website=ANSI Webstore|access-date=10 September 2017|archive-date=11 September 2017|archive-url=https://web.archive.org/web/20170911071807/https://webstore.ansi.org/FindStandards.aspx?SearchString=ISO+1222%3a2010&SearchOption=0&PageNum=0&SearchTermsArray=null%7cISO+1222%3a2010%7cnull|url-status=live}}</ref>
*[[Thread count]] is frequently measured in threads per inch.<ref>{{Cite web |date=2017-03-10 |title=What is threadcount? – domus home |url=https://www.domus-home.com/bed-linen/threadcount/ |access-date=2023-11-18 |quote=Thread count is typically quoted using the Imperial system of 1 square inch, whilst the Metric system (mainly used in Australia and New Zealand) is based upon 10 square centimeters. Suppose you pick up a bedsheet package that quotes 200 Threadcount per square inch (2.54cm x 2.54cm). Let's say that is made up of 100 threads along the length of 2.54cm, plus 100 threads along the width of 2.54cm. Since 10 square centimetres is 3.16cm x 3.16cm, this equates to 124 threads along the 3.16cm length, plus 124 threads along the 3.16cm width. Threadcount per 10 sq cm is therefore 124+124, which rounds up to 250. |archive-date=18 November 2023 |archive-url=https://web.archive.org/web/20231118102930/https://www.domus-home.com/bed-linen/threadcount/ |url-status=live }}</ref>
*[[Abrasive]]s, such as [[sandpaper]] and [[sharpening stone]]s, are commonly graded by grit, corresponding to the level of abrasiveness ([[mesh (scale)|mesh]] size) per square inch.