CST Line Lasers Home › CST/berger › CST Line Lasers We currently do not have any products for this manufacturer. Please check back soon for new products... If you would like to place an order over the phone please call 800-242-4424 for immediate assistance. Thank you. Precise alignment of horizontal and vertical lines is effortless with the line lasers. The comprehensive range is characterised by easy operation and exceptionally high precision. A wide range of outdoor and indoor applications are performed with maximum visibility, also with a green laser beam.