Roll tape measure

Details Roll tape measure Roll tape measure

1991-02-13

1992-01-07

Haroian, Harry N.

Geometrical instruments

Distance measuring

By flexible tape

G01B 310

Patent

active

050779117

ABSTRACT:
The invention relates to a roll tape measure comprising an extractable measuring tape. Attached to the free end of the measuring tape (1) is a stop hook (4) which comprises a stop member (5) which projects approximately at right angles with respect to the measuring tape (1). That surface (6) of the stop member (5) which faces the measuring tape (1) is coated with friction bodies (7). These consist, for example, of sapphire crystals having a grain size of approximately 0,12 mm. This coating with friction bodies (7) provides the stop hook (4) with a good grip on the edge of the objects to be measured and with a high degree of resistance to wear.

REFERENCES:
patent: 1172463 (1916-02-01), Johnson
patent: 1542990 (1925-06-01), Tomasso
patent: 2893656 (1959-07-01), Carlson

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