Technical Data - David White LT8-300 Owner's Manual

The numbering of the product features
shown refers to the illustration of the
instrument on the graphic page.
1. Telescope objective lens
2. Sighting notches
3. Eyepiece
4. Focusing Knob
5. Instrument level vial levers (2)
6. Horizontal circle
7. Horizontal circle lock
8. Horizontal vernier
LT8-300 Series
RANGE:
ACCURACY:
TELESCOPE
Length
Minimum focus 6 ft (1.8 m)
Aperture
Power
Field of view
No. of lenses
Stadia Ratio
HORIZONTAL CIRCLE
Graduation
diameter
Graduations
Numbers
Vernier
FEATURES

TECHNICAL DATA

Up to 400 ft.
within 3⁄16 in at 150 ft
(5 mm at 45 m)
8-1/2 in (216 mm)
1.257 in (32 mm)
26X
1' 9" @ 100 ft
(54 cm @ 30 m)
8
1:100
4-5/8 in (117 mm)
Each 1°
Each 10°, 0-90-0°
Double direct to 5
min.
9. Horizontal clamp
10. Horizontal tangent
11. Telescope lock
12. Vertical clamp
13. Vertical tangent circle
14. Vertical arc
15. Vertical vernier
16. Shifting center
17. Four leveling screws
18. 5/8-11 thread base
19. Plummet (LT8-300P/LT8-300LP)
LT8-300 Series
VERTICAL ARC
Graduations
Numbers
Vernier
CENTER
Type
LEVEL VIAL
Accuracy
PLATE VIAL
Accuracy
WEIGHT
Instrument only 9.5 lb (4.31 kg)
TRIPOD
Type
-5-
Each 1°
Each 10°, 45-0-45°
Double direct to 5
min.
Wide-stance dual
row ball bearings
110-120 sec.
per 2 mm
360 sec.
per 2.5 mm
Use a heavy-duty
5/8-11 tripod