(57) The drawing rule (10) comprises a device for raising the longitudinal edges (12a)
above the surface of the drawing paper; the rule (10) is particularly suitable for
use in carrying out pencil drawings and Chin ink drawings. Below the body (11) of
the rule, on the side facing towards the drawing sheet, a slider (14) has been provided
which is movable along a longitudinal guide (15); the slider (14) comprises at least
one raising head (16, 16a) provided on an elastically flexible arm cooperating with
lateral cams (17) for shifting the raising head (16, 16a) from a retracted position
inside the guide (15) to one or more positions in which it protrudes with respect
to the plane defined by the lateral edges (12a) of the rule (10).
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