The Sealey GA70CR Calibration Rig for The GA70 Four-Wheel Laser Aligner The Sealey GA70CR is a Calibration Rig for The Sealey GA70 Four-Wheel Laser Aligner. This unit will allow workshops to check and adjust in-house. Laser heads secure to the rig and rest on the bobbins that contact the vehicle\'s wheel rim. Features: Supplied with comprehensive instructions This unit will allow workshops to check and adjust in-house Laser heads secure to the rig and rest on the bobbins that contact the vehicle\'s wheel rim Used to check and adjust the alignment of the lasers on Model No. GA70 Four-Wheel Laser Aligner Specification: Weight: 92.1kg