LT8-300LTU Owner’s Guide LT8-300LTU LT8-300LTULP FOR CUSTOMER SERVICE, PARTS AND REPAIR CALL (765) 581-4097 www.davidwhite.us.
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.
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General Safety Rules Read all instructions. Failure to follow all instructions listed below ! WARNING may result in serious injury. When moving a tripod-mounted instrument, handle with care. Carry ! WARNING only in an upright position. Do not carry over your shoulder or in a 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.
Features The numbering of the product features shown refers to the illustration of the measuring tool on the graphic page. 1. 2. 3. 4. 5. 6. 7. 8. Telescope objective lens Sighting notches Eyepiece Focusing Knob Instrument level vials (2) Horizontal circle Horizontal circle lock Horizontal vernier 9. 10. 11. 12. 13. 14. 15. 16. 17.
general description Telescope Horizontal Measuring The telescope 1 provides a sharp image magnified 26 times. This means the object sighted appears 26 times closer than it would with the naked eye. The horizontal circle 6 can be rotated for easy angle setting and reading and is divided in quadrants (0-90°). The circle is marked by degrees and numbered every 10 degrees. The horizontal circle lock 7 assures accuracy by preventing the horizontal circle form being moved accidentally.
Operation Initial Operation Protect the instrument ! WARNING 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 measuring tool to adjust to the ambient temperature before putting it into operation. In case of extreme temperatures or variations in temperature, the accuracy of the measuring tool can be impaired.
When leveling your instrument, be sure not to touch the tripod. Follow these instructions carefully. Line up the telescope so that it is directly over one pair of leveling screws. Make minor adjustments with leveling screws if necessary. Final Level Check Rotate the telescope over each of four leveling points to be sure the bubble remains centered. Rule for Quick and Simple Leveling Grasp these two leveling screws with the thumb and forefinger of each hand.
The following examples will explain how to read the degree and vernier scales on the circle. Exact Degree Reading The point at which 0 on the vernier scale touches the circle. If the 0 coincides exactly with a degree line on the circle, your reading will be in exact degrees. There are no fractions of degrees, or minutes, to be added to the reading. The horizontal circle reading in 40°. When reading the circle degree scale to the left, read up the vernier scale in the same direction.
Stadia Reticle. All LT8-300 series instruments have a glass stadia reticle with two additional horizontal lines for use in determining distance. L A Pipe Laying Application Stadia Hairs 1. 2. Read the length “ ” of a level rod shown between the stadia hairs. A Stadia Hairs L B L = 100 x “ ” L 4. 3. 1. Set up the LT8-300LTU over your pipe laser. 2. Sight on the far point and lock the horizontal screw. 3.
LIMITED WARRANTY Dave White’s SitePro (“Seller”) warrants to the original purchaser only, that all David White laser tools and optical instruments will be free from defects in material or workmanship for a period of two (2) years from date of purchase.
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