This article is about a unit of measurement. The word "inch" is also used in Scotland as an anglicisation of the Scottish Gaelic Innis, meaning an island, or piece of dry land in a swamp, e.g. Insch, Inchkeith, Inchkenneth.
A Scottish inch (Scottish Gaelic: òirleach) was a Scottish measurement of length.
Weights and Measures, by D. Richard Torrance, SAFHS, Edinburgh, 1996, ISBN 1-874722-09-9 (NB book focusses on Scottish weights and measures exclusively)
This article incorporates text from "Dwelly's [Scottish] Gaelic Dictionary" (1911)
Scottish National Dictionary and Dictionary of the Older Scottish Tongue