초록 ▼

The invention relates to a depth gauge for use in angling or sports fishery. The depth of a body of water may be measured therewith from its surface to its bottom, and/or the depth and the size of strata of water of different temperatures for the purpose of offering bait to different species of fish

The invention relates to a depth gauge for use in angling or sports fishery. The depth of a body of water may be measured therewith from its surface to its bottom, and/or the depth and the size of strata of water of different temperatures for the purpose of offering bait to different species of fish in their preferred environments, for instance at the bottom of a water or at a thermocline stratum. In accordance with the invention, a water-proof housing a temperature sensor, a pressure sensor, a digital evaluation circuit, a display and a program switch are provided within a water-proof housing and electrically interconnected in such a manner, that the measurement value about the depth of the water to its bottom and/or water strata marked by temperature differences of more than 3.degree. Kelvin are processed and stored by the digital evaluation circuit. By means of the program switch, the stored measurement data may be called up and rendered visible in the display. In its construction and configuration the depth gauge is optimally suited for its intended use. It is light and small, and it may be industrially manufactured with little investment.

대표청구항 ▼

[ I claim:] [1.] An apparatus for measuring the vertical extent and the temperature of at least a portion of a body of water, comprising:first and second means for forming a housing;means for releasably connecting the first and second means for forming a cavity within said housing;means in at least

[ I claim:] [1.] An apparatus for measuring the vertical extent and the temperature of at least a portion of a body of water, comprising:first and second means for forming a housing;means for releasably connecting the first and second means for forming a cavity within said housing;means in at least one of the first and second housing forming means for measuring the pressure of the body of water as a function of the vertical extent and for deriving a first signal representative thereof;means in the one housing forming means connected to the pressure measuring means for storing the first signal;means in the one housing forming means for measuring the temperature of the body of water at least within the vertical extent and for deriving a second signal representative thereof;means in the one housing forming means connected to the temperature measuring means for storing the second signal;means in the one housing forming means for processing the first and second signals;means in the one housing forming means for selectively rendering the processed signals perceptible as values representative of the vertical extent and of the temperature;means in the other of the first and second housing forming means for receiving means for varying the weight of the depth gauge; andmeans mounted on at least one of the first and second housing forming means adapted to be connected to means for retrieving the apparatus from the body of water.