This vintage 3-sided triangular Wh Smith BS 1347 ruler is a rare find for collectors of engineering and surveying tools. Made in the United Kingdom, this ruler features a unique design that is not commonly seen. Its historical significance and craftsmanship make it a valuable addition to any collection of scientific collectables. Ideal for those with an interest in engineering and surveying, this ruler is a piece of British history that showcases the precision and quality of British manufacturing.

Some marks and signs of use