Guideline and layout ruler for calligraphers

Details Guideline and layout ruler for calligraphers Guideline and layout ruler for calligraphers

1978-12-07

1981-03-17

Phillips, Charles E.

Geometrical instruments

Straightedge type

Plural straightedges, relatively moveable

B43L 708

Patent

active

042558670

ABSTRACT:
A calligrapher's ruler including two fixed parallel longitudinal members each bearing a different set of graduated indicia is disclosed. A central member is slidably retained between the longitudinal members and mounts an elongated lateral straightedge member, also provided with a scale, so that the straightedge can be moved in a direction parallel to the longitudinal axes of the longitudinal members and maintained at a fixed angle, preferably perpendicular, relative thereto. A pointer on the central slide member is aligned with one of the indicia on the longitudinal members to establish the exact location of the straightedge member along the longitudinal members. A locking device on the central slide member locks the slide member and its connected straightedge in a selected position along the longitudinal members.

REFERENCES:
patent: 571252 (1896-11-01), Walkinshaw et al.
patent: 1969584 (1934-08-01), Stein
patent: 3243883 (1966-04-01), Morgan et al.
patent: 3309775 (1967-03-01), Vieregge
patent: 3635396 (1972-01-01), Palfi

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