After the reflector has been lowered into position, workers in boom lifts secure it to the elevation wheel with bolts. After construction is complete, the reflector panels that were roughly aligned on the ground will be finely aligned as part of the calibration process.
After the reflector has been lowered into position, workers in boom lifts secure it to the elevation wheel with bolts. After construction is complete, the reflector panels that were roughly aligned on the ground will be finely aligned as part of the calibration process.