| 摘要 |
A tape measure casing comprises a main shell having a central hub with a cylindrical bore opening into an enlarged cylindrical recess in a side wall, and a rotatable side flange including an integral tape drum disposed coaxially about a central cylindrical pivot rotatably received in said bore of the hub. The shell and flange are held together by a clipping button having an enlarged cruciform head rotatably received in said enlarged recess, a square shank keyed in a square bore in the pivot, and elastically deformable hooking projections engaging in a hooking recess in the pivot.
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