Nice Vintage offers 1940's Pibro Brand Spirit Level. Vintage Engineers/Machinist Spirit Level By Pibro Brand (Billy Tools Co) British Made.

A nice vintage machinist/engineers spirit offers level - Pibro Brand (Billy Tools Co) British Made, retains most of original blue paint, some areas of light rust, loss of paint, has not been stripped or cleaned and retains original patina, last picture shows a 1946 advert for this Pibro Brand level.
Size is approximately 15 cms x 1.7 cms x 1.8 cms, weight is approximately 160 g.
Please check my Vintage/Antique Tools section as I have other antique and vintage hand vices/vises, wrenches, bench vices and tools listed.