Scaling parallel bar

Details Scaling parallel bar Scaling parallel bar

1978-01-16

1979-10-16

Aegerter, Richard E.

Geometrical instruments

Straightedge type

Base attached

B43I 1302

Patent

active

041708253

ABSTRACT:
Disclosed is apparatus for determining distances along a direction in a plane. A base is constrained to translational movement along the direction by a guide system. An indicator is connected to the guide system to move relative to the base corresponding to movement of the base along the direction. In the particular embodiment disclosed, a parallel bar is provided with a moveable scale whereby the movement of the bar may be measured by determining the extent of movement of the indicator. A method disclosed for determining distances includes positioning a moveable scale in relation to a base equipped with an indicator identifying the position of the base. A reference marker may be used to identify the position along the scale the indicator is to assume when the base has been moved a desired distance.

REFERENCES:
patent: 543492 (1895-07-01), Laughlin et al.
patent: 3892041 (1975-07-01), Adair et al.
patent: 4078312 (1978-03-01), Byers

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