Johnson Theodolites 40-6936 Manual De Instrucciones página 15

8863H-All_Manuals 3/19/15 3:25 PM Page 15
Using the Telescope
• Point the telescope at the target and focus the eyepiece until the
crosshair can be seen clearly.
• Aim the telescope coarsely using the targeting sight. Keep a slight
distance between the targeting sight and your eye when aiming
coarsely.
• Focus the telescope by turning the focusing knob on the telescope.
Horizontal Angle "0-set"
1. Aim at target "A" using crosshair in the telescope.
2. Press 0-Set key once to set reading of horizontal
angle 0º00'00".
• 0-set key is only available for the horizontal angle.
• Horizontal angle can be set to "0" at any time
except when the horizontal angle is in the hold status.
Measuring Horizontal and Vertical Angle (HR, V or HL, V)
Horizontal angle right rotation increment and Vertical
angle measurement (HR, V)
1. Aim at the first "A" using the center crosshair.
2. Press 0-set key once to set the reading of
horizontal angle of target "A" at 0º00'00".
3. Rotate the instrument clockwise and aim at the
second target "B" to get the horizontal and vertical
angle of target "B".
©2015 Johnson Level & Tool - Rev. 1 15