Includes preferred sizes, for circular and semi-circular protractors made from transparent plastics. Specifies qualities of suitable materials.Cross References:BS 3693:Part 1Replaces BS 2457:1954.
- You cannot add another "BS 340:1928" to your cart. View cart
BS 2457:1975
Original price was: $160.02.$80.00Current price is: $80.00.
Specification for protractors for drawing office use
BSI Group , 01/31/1975
Pages: 8



