Depth gauge for a fishing line

Details Depth gauge for a fishing line Depth gauge for a fishing line

1991-10-21

1993-03-09

Haroian, Harry N.

Geometrical instruments

Distance measuring

Sounding type

73300, G01B 302

Patent

active

051917190

ABSTRACT:
A depth gauge for a fishing line of the manometric type, having a transparent tube plugged at one end and a valve means closing the other end, allowing a measurable amount of water into the tube and entrapping it therein, a calibrated depth scale to compare the volume of entrapped water to the related depth, and a reset means to release the entrapped water and reset the gauge. The gauge is used when fishing, trolling or casting, wherein maximum depth obtained by the gauge and other attached tackle can be determined when the gauge is retrieved from below the surface of a body of water, whether the gauge is lowered vertically or at any angle from the horizontal into the water.

REFERENCES:
patent: 242278 (1981-05-01), Davidson
patent: 1244985 (1917-10-01), Fischer
patent: 2257357 (1941-09-01), Watson
patent: 3466787 (1969-09-01), Collins
patent: 4586286 (1986-05-01), Cheatham

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