Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 1, 2008
Patent Application Number
11004377
Date Filed
December 3, 2004
Patent Primary Examiner
Patent abstract
The angle meter and spirit level apparatus can be affixed to a ladder and used to determine the angle at which the ladder is placed. The apparatus is also self-verifying in that it provides a way to know that the apparatus is operating properly. The apparatus also allows for a ladder or other similar device to be used as a carpenter's level or mason's level to determine true horizontal and also to determine the slope from the horizontal.
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