Spacer device

Details Spacer device Spacer device

1984-10-25

1986-07-22

Haroian, Harry N.

Geometrical instruments

Straightedge type

Plural straightedges, relatively moveable

33 1K, 33277, B43L 706, G01C 300

Patent

active

046011080

ABSTRACT:
A spacer device for use in placing contour lines between known points of elevation when plotting stadia, in spacing of architectural units, and in making perspective drawings, includes a parallelogramic frame comprising a plurality of frame elements pivotally connected together at their respective ends. A single elongate filament is threaded through openings in an opposed pair of frame elements to arrange the filament in parallel equally spaced apart spacer elements. The spacing between adjacent spacer elements may be readily selectively varied by adjusting the parallelogramic frame to thereby facilitate interpolation when using the spacer device to make topographical contour maps, and the like.

REFERENCES:
patent: 927790 (1909-07-01), Hall
patent: 1622229 (1927-03-01), Ormiston

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