Rods ¼ to 1 in diameter, tubes ¼ to 2 in internal diameter with wall thickness 1/32 to ¼ in. Tolerance on dimensions; density; shrinkage in air; electric strength, surface breakdown in air (tubes only); tensile strength; water absorption; moisture loss; machining tests; freedom from chlorides; test methods. See also BS 216.

BS 934:1940
Original price was: $264.00.$132.00Current price is: $132.00.
Specification for vulcanized fibre (natural colour) rods and tubes for electrical purposes
BSI Group , 03/15/1941