David White LT8-300, LT8-300LP, LT8-300P Owner's Manual
LT8-300
LT8-300P
LT8-300LP
FOR CUSTOMER SERVICE, PARTS
AND REPAIR CALL
LT8-300 Series Owner’s Guide
(765) 581-4097
www.davidwhite.us.com
IMPORTANT: IMPORTANT : IMPORTANTE:
Read Before Using Lire avant usage Leer antes de usar
With David White
your sights are set on
precision and accuracy.
Congratulations! You’ve purchased a David White builder/contractor instrument,
known throughout the world for precision and accuracy.
The purpose of this user’s guide is to acquaint you with the instrument, its
components, safety, proper care and handling.
Our levels, level-transits and transits are constructed to withstand extremely
rugged field use. Like all precision instruments, however, they should be treated
with reasonable care to prolong life and accuracy.
All instruments are adjusted when they are shipped from the factory. It is the
customer’s responsibility to check and to ensure instruments are adjusted prior
to using.
David White is not responsible for errors caused by instruments that are out of
adjustment.
Contact your distributor, dealer or David White for information on the nearest
facility to check if your instrument is properly adjusted.
All specifications are subject to change without notice.
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2
5
12
1
11
11
3
14
15
6
17
16
2
5
12
18
4
3
13
19
8
9
10
7
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GENERAL SAFETY RULES
!
WARNING
!
WARNING
horizontal position. Improper handling may result in instrument damage
Handle the instrument by its base when removing from the case or attaching to a tripod.
Never use force on any parts of the instrument. All moving parts will turn freely and easily
by hand.
Check the leveling and indication accuracy of the instrument each time before using and
after longer transport of the instrument.
Protect the instrument against moisture and direct sun light.
Do not subject the instrument to extreme temperatures or variations in temperature.
As an example, do not leave it in vehicles for long time. In case of large variations in
temperature, allow the instrument to adjust to the ambient temperature before putting
it into operation. In case of extreme temperatures or variations in temperature, the
accuracy of the instrument can be impaired.
Avoid any impact to or dropping of the instrument. After severe exterior effects to
the instrument, it is recommended to carry out an accuracy check each time before
continuing to work.
Place the instrument in the provided case when transporting it over larger distances
(e.g. in the car). Ensure that the instrument is correctly placed in the transport case.
When placing the instrument in the case.
When carrying instrument, always remove the instrument from the tripod when
transporting or carrying it at the jobsite. If the instrument must be carried on the tripod,
hold the instrument as vertically as possible and keep it in front of you. Never carry the
instrument horizontally over your shoulder.
When transporting instrument long distances, always place in the carrying case.
Read all instructions. Failure to follow all instructions listed below
may result in serious injury.
When moving a tripod-mounted instrument, handle with care. Carry
only in an upright position. Do not carry over your shoulder or in a
SAVE THESE INSTRUCTIONS
INTENDED USE
The instrument is intended for determining and checking precise horizontal partitions. It
is also suitable for measuring heights, distances and angles.
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FEATURES
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
TECHNICAL DATA
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
RANGE:
ACCURACY:
Up to 400 ft.
within 3⁄16 in at 150 ft
(5 mm at 45 m)
TELESCOPE
Length
Minimum focus
Aperture
Power
Field of view
No. of lenses 8
Stadia Ratio 1:100
8-1/2 in (216 mm)
6 ft (1.8 m)
1.257 in (32 mm)
26X
1' 9" @ 100 ft
(54 cm @ 30 m)
HORIZONTAL CIRCLE
Graduation
diameter
Graduations Each 1°
Numbers Each 10°, 0-90-0°
Vernier Double direct to 5
4-5/8 in (117 mm)
min.
LT8-300 Series
VERTICAL ARC
Graduations Each 1°
Numbers Each 10°, 45-0-45°
Vernier Double direct to 5
min.
CENTER
Type Wide-stance dual
row ball bearings
LEVEL VIAL
Accuracy 110-120 sec.
per 2 mm
PLATE VIAL
Accuracy 360 sec.
per 2.5 mm
WEIGHT
Instrument only 9.5 lb (4.31 kg)
TRIPOD
Type Use a heavy-duty
5/8-11 tripod
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