Plotting board with magnetic pivot

Details Plotting board with magnetic pivot Plotting board with magnetic pivot

2006-07-13

2008-09-30

Bennett, G. Bradley (Department: 2841)

Geometrical instruments

Straightedge type

Base attached

C033S0010SD, C033SDIG010

Reexamination Certificate

active

07428782

ABSTRACT:
A plotting board includes a base; a top; a pivot that connects the top and the base, the top and the base being rotatable and detachable with respect to each other, the pivot including a magnet wherein at least a portion of the pivot is disposed at a substantially central point on the top.

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