Bosch cross line laser UniversalLevel 3 with tripod (3 laser lines incl. vertical line at 90° angle for an additional laser cross on the ceiling and bottom plumb point for precise alignments) :
Bosch Universal Level - Cash Converters
UniversalLevel 3 - Set Cross Line Laser | Bosch DIY
Bosch 0603663801 UniversalLevel 2 Cross Line Laser Set 1.1 m Aluminium tripod