| 摘要 |
A tool (10,10',10'') for forming and applying an adjustable, selected angle to one or more pieces (8) of building material such as sheet rock, plywood, paneling or the like is shown comprising a first leg (12,12',12'') having a longitudinally extending slot (34,54) pivotably attached to a second leg (20) with a connecting link (30) pivotably attached to the second leg and slidably and lockably attached in the slot (34,54) of the first leg (12,12',12'')
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