4. Geometrical instruments
  5. Straightedge type
  6. Wall guide and plumb

Alfred A. Hurt

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Gable mason's tool for establishing a horizontal guideline

Geometrical instruments – Straightedge type – Wall guide and plumb
Patent

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Multi-purpose square

Geometrical instruments – Straightedge type – Square and pivoted straightedge
Patent

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Security lock for door

Closure fasteners – Extension link – Slotted bar
Patent

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Square adapter for level

Geometrical instruments – Straightedge type – Plural straightedges – relatively moveable
Patent

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Profile ID: LFUS-PAI-P-1036767

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