G - Physics
01
C
G01C 9/28 (2006.01)
Patent
CA 2083067
A post level is defined by a pair of right- angle walls. A horizontal bubble vial is mounted in each wall, and a vertical bubble vial is mounted at the inter- section of the walls. The vials are mounted in the interior of a pair of spaced protrusions formed in each wall, which define internal structure engaging and cra- dling an end of the vial without positively retaining the vial within the protrusion. The protrusions open onto the inner surface of the walls, and a retainer plate is positioned over the opening of the protrusions to retain the vials within the interior of the protrusions. The retainer plate is light-reflective to enhance visibility of the vial bubble.
Borden Ladner Gervais Llp
Johnson Level & Tool Mfg. Co. Inc.
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