Spectra - AL28M-1

Below are all the different types of Spectra. Select the device of your choice, to download the manual

Contents

How to Use the Instrument Setting Up the Instrument 1 Set up the tripod at a height appropriate for your use Note Make sure the tripod is stable and the tripod head is relatively level 2 Attach the instrument to the tripod 3 Level the instrument using the circular level as a reference 4 Focus the telescope crosshairs by turning the crosshairs focusing ring Aligning the Instrument 1 Align the telescope to the grade rod using the sighting guides 2 Turn the focusing knob to bring the grade rod into sharp focus Precisely sight the center of the grade rod in the telescope crosshairs using the horizontal tangent knob 3 Check for parallax shift Note No parallax exists if the crosshairs and the grade rod graduations remain in coincidence even wh ...