초록 ▼

An apparatus for maintaining a scientific or measuring instrument or the like in a level horizontal plane. The apparatus comprises an inclinometer comprising a support housing and a plumb member freely suspended within the support housing. The plumb member has an exterior surface provided with first

An apparatus for maintaining a scientific or measuring instrument or the like in a level horizontal plane. The apparatus comprises an inclinometer comprising a support housing and a plumb member freely suspended within the support housing. The plumb member has an exterior surface provided with first sensing means and the support housing has an interior surface provided with second sensing means cooperative with the first sensing means in determining simply variation of the support housing from an exact upright position. Automatic adjustment means are also provided which are responsive to the first and second sensing means for adjusting the support housing to maintain an upright positioning of the support housing and the instrument attached thereto.

대표청구항 ▼

An apparatus for maintaining a scientific or measuring instrument in a level horizontal plane comprising an inclinometer comprising a support housing and a plumb member freely suspended within said support housing in a manner to prevent rotation thereof along its longitudinal axis, said plumb member

An apparatus for maintaining a scientific or measuring instrument in a level horizontal plane comprising an inclinometer comprising a support housing and a plumb member freely suspended within said support housing in a manner to prevent rotation thereof along its longitudinal axis, said plumb member having an exterior surface provided with first sensing means and said support housing having an interior surface provided with second sensing means cooperative with said first sensing means, said first and second sensing means forming sensing means pairs to determine the degree of variation of said support housing from an exact upright position, said first and second sensing means comprising a plurality of individual sensing elements respectively opposing one another, said sensing means pairs being in an electrically balanced condition when said support housing is in an exact upright position, and automatic adjustment means responsive to said sensing means pairs, said automatic adjustment means including a control circuit comprising means for determining an electrically unbalanced condition of said sensing means pairs and adjusting the support housing to return to the electrically balanced condition of the sensing means pairs and thereby maintain the upright position of said support housing.