7. ACCURACY CHECK IMPORTANT! Laser beam widens over distance; therefore, ALWAYS take measurements at the center of the beam. However, for the sole purpose of accuracy check, since the distance between the instrument and the target remains constant, you may use the lower edge of the beam as reference. IMPORTANT! Tripod needs to stand on solid ground. WARNING! Ground shake or impact to the mounted instrument may cause the beam position to fluctuate. Allow time for the laser beam to self-level and ensure your vertical height is maintained prior to continuing.
min. 50' (15 m)
1. Position the instrument and tripod at no less than 15 m from the opposite wall in a dimly lit room. 2. Draw an accuracy check worksheet as shown below. 3. Position the worksheet on the opposite wall of the room so that the laser beam can be clearly marked. Worksheet X-Axis Y-Axis X - 0º X - 180º Y - 0º Y - 180º
*Displayed markings are exaggerated for illustration purposes.
IMPORTANT! Do not tamper with the tripod or modify the position of the worksheet during the accuracy check process. 4. Power-ON the instrument: Rotate the Pendulum Lock/ Unlock Switch 3 to the UNLOCKED Position and wait until the beam is self-levelled on the horizontal plane.
36
Made with FlippingBook Ebook Creator