South Automatic Level
Chinese patent, excellent shockproof function
Excellent sealed structure for using in any weather
Exclusive closed magneticfield, magetically-dampenedcompensator
Firction-braked rotation and endless horizontal drive
Prism for viewing circular vial
Model |
NL20 |
NL22 |
NL24 |
NL26 |
NL28 |
NL30 |
NL32 |
Standard deviation for
1km double run leveling |
2.5mm |
2.0mm |
2.0mm |
1.5mm |
1.5mm |
1.5mm |
1.0mm |
Image |
Erect |
Erect |
Erect |
Erect |
Erect |
Erect |
Erect |
Magnification |
20X |
22X |
24X |
26X |
28X |
30X |
32X |
Objective aperture |
34mm |
34mm |
34mm |
38mm |
38mm |
38mm |
38mm |
Field of view |
1°20' |
1°20' |
1°20' |
1°20' |
1°20' |
1°20' |
1°20' |
Minimum focus |
0.5m |
0.5m |
0.5m |
0.5m |
0.5m |
0.5m |
0.5m |
Multiplication constant |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
Additive constant |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Compensator range |
+/-15' |
+/-15' |
+/-15' |
+/-15' |
+/-15' |
+/-15' |
+/-15' |
Compensator
setting accuracy |
+/-0.6" |
+/-0.6" |
+/-0.6" |
+/-0.6" |
+/-0.6" |
+/-0.6" |
+/-0.6" |
Sensitivity of bubble |
8'/2mm |
8'/2mm |
8'/2mm |
8'/2mm |
8'/2mm |
8'/2mm |
8'/2mm |
Horiz.circle-reading |
1°or
1 gon |
1°or
1 gon |
1°or
1 gon |
1°or
1 gon |
1°or
1 gon |
1°or
1 gon |
1°or
1 gon |
