Full Description
Straightedges of short length for very accurate work, having one working edge which is bevelled and very slightly rounded off ('knife-edge'). Material, general features, finish, accuracy, handles, glass test plate, case, packing, marking.
Cross References:BS 817
BS 818
BS 863
BS 869
BS 870
BS 887
BS 888
BS 906
BS 907
BS 939
BS 957
BS 958
BS 959
BS 1054
BS 1643