Feed index device in universal parallel ruler or the like

摘要

A feed indexing device for a draftsman's straight-edge includes a control member that can be selectively linked to a straight-edge carriage plate. When the control member is linked to the carriage plate, it is rotated proportionately to carriage plate movement. An indexing mechanism is included for allowing the control member to only rotate a preset distance for each resetting thereof. A brake mechanism is included for braking further movements of the carriage plate during resetting of the control member.