Pair of measuring compasses

Details Pair of measuring compasses Pair of measuring compasses

1987-10-22

1989-07-04

Hix, L. T.

Geometrical instruments

Scriber

Curved line

B43L 900

Patent

active

048437190

ABSTRACT:
In a two-legged pair of compasses the one leg (10) is provided with a measuring and mounting facility (40) which, at one of its ends (41), is linked to this leg (10) and which, at its other end (42), is provided with a scribing device (50), wherein the measuring and mounting facility (40) is provided with an aperture (43) through which a measuring ruler (60) on which lengthwise graduations (65) are applied can be passed which, with one of its ends (61) is detachably secured to the carrying element (21) of the other leg (20) and which projects with its other free end (62) that can be passed through the aperture (43), while on the measuring and mounting facility (40), a point-like configured indicator (44,45) which can be allocated to the longitudinal graduations (65) so that the thus necessary measuring of dimensions with the aid of measuring rulers is dispensed with (FIG. 1). The scribing device (50) is rotatably connected by means of an articulated member (53) around the vertical axis (H) with the measuring and mounting facility (40).

REFERENCES:
patent: 1235715 (1917-08-01), Mouney
patent: 1998352 (1935-04-01), Bachmann
patent: 4173076 (1979-11-01), Gossage

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