Retractable rule assembly with improved blade opening

Geometrical instruments – Distance measuring – By flexible tape

Reexamination Certificate

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C033S768000, C033S770000

Reexamination Certificate

active

06892468

ABSTRACT:
A retractable rule assembly includes wear resistant structure formed of a wear resistant material. The wear resistant structure is mounted at each lateral side of a blade opening of the rule assembly's housing to substantially protect the plastics material at the lateral sides from wear by the lateral side edges of the blade. An alternative retractable rule assembly has rollers rotatably mounted at each lateral side of the blade opening.

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