Bosch Professional Tile Laser GTL 3 (3 lines, range: up to 20m, 4x AA batteries, protective bag)

Amazon

THREE LASER LINES: In addition to the two laser lines at a 90° angle, it projects a third line at 45° for precise and fast alignment and laying of wall and floor tiles. HIGH ACCURACY: The GTL 3 is highly precise with an accuracy of ± 0,2 mm/m* at 90º and ± 0,4 mm/m* between the 45º and 90º line. EASY TO USE: The one-button interface including a LED battery indicator and it's compact design make it simple and fast to use. DUST AND SPLASH WATER PROTECTION: IP 54 dust and splash water protection contributes to the laser level robustness ITEMS INCLUDED: Tile laser GTL 3, 4x AA batteries, alignement disc, laser target plate, protective bag, Weight: 1.80117668054 pounds, Manufacturer: Bosch Professional

ManoMano

With its 45 degree line, laying tiles has never been this fast or easy Simple to use with its one button and LED battery indicator Projects three laser lines for easy parallel and diagonal laying Range of 20 meters with target plate - line accuracy of 0.2 millimeters per metre Lightweight and compact design, and single-button operation

Zoro Tools

Gtl 3 Tile Laser - BCH2669087T by Zoro Select