Device for linear drawing

Details Device for linear drawing Device for linear drawing

1979-02-06

1980-11-25

Shepperd, John W.

Geometrical instruments

Straightedge type

Plural straightedges nonadjustably fixed at right angles

33 42, B43L 1300

Patent

active

042350220

ABSTRACT:
A device for drawing parallel lines both in vertical and horizontal directions, and for drawing circumferences without a compass, includes two pieces, one of which is a set square and the other of which is a plate. Two adjacent edges of the plate are provided with markings, such as a millimetric scale, and groups of holes are distributed in relation to the markings of the indicated scale.

REFERENCES:
patent: 844243 (1907-02-01), Breul
patent: 1692149 (1928-11-01), Castan
patent: 1993347 (1935-03-01), McMillan

Affiliated with

Also associated with

Rating

Device for linear drawing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for linear drawing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for linear drawing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1123877