Solid steel stocks with hardened, tempered and finely polished blades. The squareness of the blade edges and the stock working face falls within ±0.016mm/0.0064" tolerance. Display packed. * Manufactured to BS 939 Workshop Grade B for squareness tolerance only https://elecena.pl/product/27253304/draper-34065-150mm-engineers-precision-square 2024-11-13 https://elecena.pl/product/27253304/draper-34065-150mm-engineers-precision-square 2025-03-14 https://elecena.pl/product/27253304/draper-34065-150mm-engineers-precision-square 2026-05-29 https://elecena.pl/product/27253304/draper-34065-150mm-engineers-precision-square 2026-07-14 https://elecena.pl/product/27253304/draper-34065-150mm-engineers-precision-square 2026-08-07 https://elecena.pl/product/27253304/draper-34065-150mm-engineers-precision-square 2026-08-30