Geometrical instruments – Indicator of direction of force traversing natural media – Structurally installed including relation to feature thereof
Patent
1996-10-01
1997-10-28
DePumpo, Daniel G.
Geometrical instruments
Indicator of direction of force traversing natural media
Structurally installed including relation to feature thereof
33370, 33391, 33399, B23B 4900
Patent
active
056807074
ABSTRACT:
A housing includes a pendulum having a window registerable with either of spaced apart indicia depending on what side of a ladder a housing is mounted to indicate the ladder is positioned at a safe angle against a vertical support. Wording on the pendulum is readable with wording in the spaced apart indicia to further indicate the ladder is at a safe angle. The pendulum is pointed at its lower end to register with third indicia positioned between the spaced apart indicia to indicate that the ladder is on a level surface.
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DePumpo Daniel G.
Wy-Tech, Inc.
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