Browman
OB510: 0.7 + 0.8mm, FIG. 00/0
OB511: 0.9 + 1.1mm, FIG. 1/2
OB512: 1.3 + 1.4mm, FIG. 3/4
OB513: 1.5 + 1.6mm, FIG. 5/6
OB514: 1.8 + 1.9mm, FIG. 7/8