Specification for engineers´ ratchet braces and drilling pillars.
NORMA vydaná dňa 10.2.1953
Označenie normy: BS 1937:1953
Dátum vydania normy: 10.2.1953
Počet strán: 22
Približná hmotnosť: 66 g (0.15 libier)
Krajina: Britská technická norma
Kategória: Technické normy BS
Sizes, dimensions, material, for following open and enclosed drive ratchet braces: long head (box), short head, extra short head (pin brace), short head heavy duty (boiler brace), bit stock. Dimensions of drilling pillars for use with braces. For use with drills having Morse taper or square taper shanks, when necessary employing an adaptor, conversion details of which are included. Status: Confirmed