Patent ID: 6996910

Claim:
A laser leveling device comprising: a housing including a cavity formed therein, and including two annular conductors disposed in said cavity of said housing, and including a switch provided thereon, a laser instrument including a base rotatably received in said cavity of said housing, and including a light emitting device disposed therein for generating a light beam, and including two annular terminals disposed around said base to electrically couple to said annular conductors of said housing respectively, and means for energizing said light emitting device of said laser instrument to generate the light beam, said energizing means including at least one battery disposed in said housing and coupled to said conductors of said housing respectively, and the light beam generated by said light emitting device of said laser instrument being rotatable relative to said housing when said light emitting device of said laser instrument is rotated relative to said housing, and said switch of said housing being provided to control an energizing of said at least one battery to said laser instrument.