Multi-task protractor

Details Multi-task protractor Multi-task protractor

2007-03-13

2007-03-13

Guadalupe-McCall, Yaritza (Department: 2859)

Geometrical instruments

Straightedge type

Plural straightedges, relatively moveable

C033S424000, C033S465000

Reexamination Certificate

active

11052013

ABSTRACT:
A multi-task protractor apparatus having the capabilities of a rotating protractor, adjustable triangle, ruler, miniature leveler, framing square and roof angle finder is disclosed. The multi-task protractor accurately measures angles and slopes and provides two straight edges for constructing angles and triangles.

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