Divider Compass with Fine Adjust Johnson (1175)
Info
Steel dividers with maximum width 30 cm. There is a fixation knob to fix the setting after which the fine adjustment knob can be used. The hinge is made out of brass.
Length of the legs is approx 20cm (8 inches).
Inscriptions:
Wm Johnson Inc.
Newark N.J. U.S.A
TEMPERED
References/Links/More Info
Archive.org - Catalogue No 32-A - Page 6 - Wing Dividers