English: This tartan is Wilsons No. 155, also known later as Caledonia (but apparently not named that by Wilsons). There are several other setts by that name. This one was a "fashion" tartan by Wilsons, intended for wear by anyone.

This version of the image is exactly full-sett, and can tile horizontally and vertically.

Scottish Register of Tartans notes on this design: "Also known as William Wilsons No. 155. Popular in the [late!] eighteenth century this particular tartan appears in a number of guises. Romantic stories are told of its origin but in reality little is known (Gordon Teall, Scottish Tartans Society). Jamie Scarlett MBE asserts that Wilsons' No 155 has never been named, and that Miss Margaret MacDougall was in error when she included it in Robert Bain's 'Clans and Tartans of Scotland' (1953) as Caledonia. It is included here because of its obvious family resemblance to other Caledonia setts. Wilsons of Bannockburn a weaving firm founded c. 1770 near Stirling. The pattern books are in the National Museums Scotland, Edinburgh."

This is a regular, mirroring tartan. SRT-provided thread count (in slash notation): /R42 A18 K4 A4 K4 A18 K36 Y6 G42 R26 K6 R26 W4 R26/ or in bold notation: R42 A18 K4 A4 K4 A18 K36 Y6 G42 R26 K6 R26 W4 R26 (where A = azure blue).