Abstract: A laser level receives information describing a series of install points. The laser level than projects one or more laser beams at the install point(s), such as a planar laser beam along the run and a targeting laser beam at the point selected by the user. After the user finishes work on a first install point, the user can instruct the laser level to project the targeting laser beam at the next point, such as the user sending the instruction wirelessly.

Abstract: A cell culture bioreactor having a culture chamber for cell growth, a culture medium reservoir mounted externally to the culture chamber, a fluid circulation mechanism for moving culture medium from the reservoir through the culture chamber, and an aerating mechanism for introducing air into and removing air from the culture chamber is provided. The cell culture bioreactor comprises a manifold mechanism mounted at the top end of the culture chamber, a fluid circulation mechanism fluidly connected to the culture medium reservoir, for receiving culture medium from the culture medium reservoir and distributing culture medium into the culture chamber.