US Patent 7152334 Controlled support frame to position a laser level

The invention relates to a support frame positioning a laser beam level and comprises:a first support module 1 inclusive a reference element 10 that can be positioned against a planar surface and enganging elements 11 located in a longitudinal direction A1 to cooperate with a second support module 2 displaceable relative to the first support module 1,bracing means 22 on the second support module 2 to support a laser beam type level 3 and a motor 25 to power a drive shaft in either of two directions of rotation of at least one element translatable along the first support module 1, anda remote control for said motor 25.