Geometrical instruments – Area integrators – Electrical
Patent
1984-07-13
1985-08-27
Stearns, Richard R.
Geometrical instruments
Area integrators
Electrical
33161, 33178R, G01B 502, G01B 512
Patent
active
045369607
ABSTRACT:
The invention is an improved calipers that is arranged for reading at a remote distance from the object being measured, for either inside or outside diameters. The need for a calipers capable of being read at a remote distance is experienced when an item to be measured, such as a pipe, is below ground level in a manhole or drain catch basin, or at some elevated location above ground or floor level that is not readily accessible. The present invention of a calipers eliminates climbing down into a manhole or a drain opening where a ladder may be absent or not readily available or where dangerous gases may be present, or at an elevation above floor or ground level when a ladder is not readily available. The invention consists of a pair of sliding rod members to define the dimensional reading, a pair of dimensional point indicators, a plurality of sliding rod combined coupler-guides, and a plurality of affixing members for connections. The sliding rod members may be in a plurality of sections.
REFERENCES:
patent: 1238045 (1917-08-01), Nelson
patent: 1735892 (1929-11-01), Clausen et al.
patent: 2583205 (1952-01-01), Boisen
patent: 2648133 (1953-08-01), Kosmoski et al.
patent: 3995373 (1976-12-01), Brumbelow
Finch Walter G.
Stearns Richard R.
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