[. . . ] 2) To level the laser, center the bubbles in the horizontal vials by turning leveling knobs X and Y. vertical Setup 1) Put the SKR60 in vertical position on a flat surface or tripod. [. . . ] 2) To position the laser so that the rotating beam is horizontal, open the adjustable slope lock (15). € 7 Using the laser in vertical mode on tripod: 1) Use the tripod mount (16) to attach the laser to the tripod. 2) Level vertical bubble vial as described under “Vertical Setup. € Slope The SKR60 can be inclined up to 90° to lay out stairways and cathedral ceilings. 1) Holding the laser in vertical position, attach laser to the tripod using the 5/8-11 mount on the wall mount. Tilt the laser until you reach the desired grade as shown on slope angle index (17) and lock. Changing the batteries When battery power is low, the laser will stop rotating and the laser beam will blink. 2) Replace batteries with 3 new AA alkaline batteries, matching polarity (– and +) as indicated in the compartment. 8 How to check the laser Y axis X axis Here are a few simple instructions to check your laser for calibration. Remember that the laser is a precision instrument and that it is important that you keep it calibrated and in proper condition. The accuracy of your work is completely your responsibility and you should regularly check your instrument, especially prior to important jobs. Horizontal checking (X and Y axis) The laser has 2 horizontal axes; both ends of each axis must be checked for calibration. To check the first axis, position it so that the Y leveling knob is facing the checking wall. 2) Center the bubbles in the horizontal vials by turning leveling knobs X and Y. [. . . ] Although weather resistant, you must always keep your laser and its accessories dry and clean after using. Do not store your laser at temperatures below –4°F (-20°C) or above 176°F (80°C) because the electronic components could be damaged. [. . . ]