Telescoping measuring rule
AssigneeOlle Humble
InventorElis Jansson
Life of this patent
Estimating the term…
Abstract
A measuring rule consists of a plurality of sections which can be displaced telescopically relative to each other and have a first scale for outside measurement which begins at zero at the outer end of one end section. Said sections also have a second scale for inside measurement which begins at the outer end of one end section with a value equal to the length of the measuring rule when the sections are fully contracted.
Claims6
In a telescoping measuring rule, comprising a plurality of slidably interconnected staff-shaped sections, which can be displaced relative to each other in their longitudinal directions to vary the length of the measuring rule, and abutments to determine the maximum relative displacement in one direction between interconnected sections;
- the improvement in which said sections have a first scale for taking outside measurements, the graduation thereof beginning at the outer end of an end section, the graduation of the other sections being a continuation of the graduation of the immediately preceding sections, and a second scale for taking inside measurements, the graduation of which begins at the outer end of an end section with a lowest value equal to the length of the measuring rule when fully contracted, the graduation of the other sections being a continuation of the graduation of the immediately preceding sections, said second scale being placed so that the measurement can be read against the end edge of the next following section.
Dependencies are inferred from the claim text.