Laser level and square

Claim 2

In a building level, the combination of: a housing; a laser mounted in said housing; first means for supporting said housing on a surface; second means for simultaneously directing two beams of said laser from said housing along two perpendicular axes; said first means including first, second and third points carried on said housing, with each of said first and second points including threaded means interconnecting the point and housing for movement of the point relative to the housing for leveling said housing; a first block mounted on said housing with said first and second points threadedly mounted in said first block substantially parallel to each other; and means for translating said first block relative to said housing.

Claim 3

A level as defined in claim 1 including third means for rotating said laser 90* about one of said axes.

Claim 4

A level as defined in claim 1 wherein said second means includes a beam splitter passing a portion of the incoming radiation from the laser and reflecting a portion at 90* to the incoming beam.

Claim 5

A level as defined in claim 1 including a second block rotatably mounted on said housing with said first block carried thereon, and means for indexing said second block relative to said housing at two positions.

Claim 6

A level as defined in claim 1 including a beacon mounted on said housing, said beacon including reflecting means for receiving one of said beams and reflecting the one beam at 90* into a plane parallel with the other of said beams, and means for rotating said reflecting means to direct said beam one around said plane.

Claim 7

A level as defined in claim 1 including third means for simultaneously directing a third beam of said laser from said housing along a third axis perpendicular to said two axes.

Claim 8

A level as defined in claim 6 with said three beams having a common point of origin.

Claim 9

A level as defined in claim 6 wherein said third means includes a second beam splitter for producing said third beam and mirror means for reflecting said third beam along the desired path.

Claim 10

In a building level, the combination of: a housing; a laser mounted in said housing; first means for supporting said housing on a surface; second means for simultaneously directing two beams of said laser from said housing along two perpendicular axes; said first means including first, second and third points carried on said housing, with each of said first and second points including threaded means for interconnecting the point and housing for movement of the point relative to the housing for leveling said housing; a fourth point carried on said housing at 90* to said third point; a block rotatably mounted on said housing with said first and second points threadedly mounted therein substantially parallel to each other; and means for indexing said block relative to said housing at two angular positions 90* apart.

Claim 11

In a building level, the combination of: a housing; a laser mounted in said housing; first means for supporting said housing on a surface; second means for simultaneously directing two beams of said laser from said housing along two perpendicular axes; said first means including first, second and third points carried on said housing, with each of said first and second points including threaded means for interconnecting the point and housing for movement of the point relative to the housing for leveling said housing; a fourth point carried on said housing at 90* to said third point; a block rotatably mounted on said housing with said first and second points threadedly mounted therein substantially parallel to each other; and means for indexing said block relative to said housing at two angular positions 90* apart.

Claim 12

In a building level, the combination of: a housing having a longitudinal axis; a laser mounted in said housing; first means for supporting said housing on a surface; second means for simultaneously directing two beams of said laser from said housing along said first axis and along a second axis perpendicular to said first axis; said first means includes first, second and third points carried on said housing, with said third point on said second axis adjacent one end of said housing, and with said first and second points adjacent the other end of said housing and moveable reLative to the housing for leveling the housing.

Claim 13

In a building level, the combination of: a housing having a longitudinal axis; a laser mounted in said housing; first means for supporting said housing on a surface; second means for simultaneously directing two beams of said laser from said housing along said first axis and along a second axis perpendicular to said first axis; said first means includes first, second and third points carried on said housing, with said third point on said second axis adjacent one end of said housing, and with said first and second points adjacent the other end of said housing and moveable reLative to the housing for leveling the housing.

Claim 14

A level as defined in claim 10 including a beacon mounted on said housing on said second axis, said beacon including reflecting means for receiving the second axis beam and reflecting the beam at 90* into a plane parallel with said first axis, and means for rotating said reflecting means to direct said second axis beam around said plane parallel to the first axis beam.