David White L6-20N User Manual

L6-20N Level and
LT6-900N Level-Transit
10
60
70
80
90
80
70
60
20
20
10
10
10
10
20
20
30
30
40
40
50
50
60
60
70
80
90
80
70
60
50
40
30
20
10
50
5
0
30
3
40
4
4
50
5
50
50
10
20
30
40
50
60
70
80
90
80
70
60
50
50
40
40
30
30
20
20
10
10
20
20
30
30
40
40
50
50
60
60
70
80
90
80
70
60
50
40
30
20
10
L6-20N Level (Model 44-8824)
LT6-900N Level-Transit (Model 44-8834)
For customer service, call (815) 432-9200
L6-20N / LT6-900N Owner's Guide
00-8830-810

David White L6-20N Specifications

General

Type	Rotary Laser Level
Accuracy	±1/8 inch at 100 feet
Laser Color	Red
Laser Diode	635 nm
Power Source	Battery
Battery Life	Up to 20 hours
Weight	4.5 lbs
Operating Temperature	14°F to 122°F (-10°C to 50°C)
Battery Type	AA
Self-Leveling Range	±5°

Summary

Specifications

Telescope Specifications

Details the optical and physical characteristics of the instrument's telescope, including power, length, and aperture.

Horizontal Circle

Vertical Arc

Weight Information

Setting up your instrument

Leveling the three screw instrument

Detailed procedure for leveling the instrument using its three base leveling screws.

Bubble Adjustments

Reading the circle and vernier

Sighting and focusing the telescope

Guidance on aiming the telescope, focusing on the target, and using crosshairs for precision.

Care and handling

Measuring and laying out angles

Instrument service and repair

Checking for calibration