2594H 7/29/09 10:12 AM Page 1 ® 22X Builder’s Level Model No. 40-6900 Instruction Manual Congratulations on your choice of this 22X Builder’s Level. We suggest you read this instruction manual thoroughly before using the instrument. Save this instruction manual for future use. ©2009 Johnson Level & Tool Rev.
594H 7/29/09 10:12 AM Page 2 Table of Contents 1. Kit Contents 2. Features and Functions 3. Location of Parts/Components 4. Operating Instructions 5. Calibration 6. 7. 8. 9. 10. Technical Specifications Care and Handling Product Warranty Product Registration Accessories 1. Kit Contents Description 22X Builder’s Level Instruction Manual with Warranty Card Hard Shell Carrying Case Qty. 1 1 1 2.
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2594H 7/29/09 10:12 AM Page 4 4. Operating Instructions IMPORTANT: It is the responsibility of the user to verify the calibration of the instrument before each use. Set-Up the instrument on the tripod When setting up the tripod, make sure the three tripod points are firmly into the ground and the top of the tripod head is as level as possible. Adjust the height of the tripod to a comfortable viewing height, and secure the retractable legs.
2594H 7/29/09 10:12 AM Page 5 Keep about half the length engaged. When the bubble is centered in position #1, turn the instrument and observe the vial in position #2. Now center the bubble in position #2 using only screw C. The instrument should now be leveled, but to be certain, double-check. Rotate the instrument 180º so the vial is reversed. If the bubble will not center when reversed, follow adjustment procedure outlined under “Bubble Adjustments.
2594H 7/29/09 10:12 AM Page 6 In the illustration above, the index has passed the 44 degree line but has not gone as far as the 45 degree line. In this case, the third vernier line from the index is lined up with one of the lines on the circle. Since each vernier line represents 15 minutes add 45 minutes to the 44 degree reading (3 times 15 minutes equals 45 minutes). Therefore our exact reading is 44 degrees, 45 minutes (44º45’). 5. Calibration 5.
2594H 7/29/09 10:12 AM Page 7 5.2 Instrument accuracy check Set up the instrument in an area that is as level as possible and which is about 220 ft. long. Place two matching level rods about 200 ft. apart with the faces toward each other. Position and level the instrument so that the distance from the instrument to each rod is the same. (Fig. 1) Fig. 1 Fig. 2 Take a reading on each rod with the instrument. Note the difference and record them.
2594H 7/29/09 10:12 AM Page 8 5.3 Instrument accuracy adjustment If the error is more than 3/16” at 100’, it is necessary to adjust the instrument. Eyepiece tube When adjusting the instrument: 1. Remove rubber cover to expose the two Eyepiece seat Set Screws calibration set screws. 2. Using a 1.5mm Allen wrench, loosen the two calibration set screws. 3. Rotate the eyepiece seat to make the crosshair center in the reticle of instrument on the same level with a known reference point.
2594H 7/29/09 10:12 AM Page 9 Suppose one of your points is below the line of sight and the other above (Fig B.), C is 4 feet 6-1/2 inches below the line of sight, and point D, the underside of a floor beam is 7 feet 9-3/8 inches above the line of sight (the latter reading having been obtained by holding the rod upside down with the foot of the rod against the beam). D is then higher than C by an amount equal to 4 feet 6-1/2 inches plus 7 feet 9-3/8 inches, or a total of 12 feet 3-7/8 inches. 5.
2594H 7/29/09 10:12 AM Page 10 5.6 Stadia Distance Measuring Distance measuring can be done using the stadia hairs of the reticle. The distance between the upper stadia hair and the lower stadia hair is set at a 1:100 ration. So if the difference is 1 foot, the person holding the grade rod is 100 feet away from the instrument. 5.7 Measuring Horizontal Angles To measure or lay out an angle, set the instrument over a point and level it up. Use a plumb bob with about six feet of string.
2594H 7/29/09 10:12 AM Page 11 instrument over point F in accordance with previous instructions. Rotate the instrument until point E is nearly in line with the vertical crosshair. Turn tangent screw until vertical crosshair is on point E. By hand set the horizontal circle to read zero. Now, swing the telescope toward point G until the vertical crosshair is exactly on point G. Your instrument is furnished with a vernier and you will be able to read the angle closer than a single degree.
2594H 7/29/09 10:12 AM Page 12 6. Technical Specifications Telescope Magnification Leveling accuracy Working range Minimum focus Clear objective aperture Field of view Number of lenses Level vial Erect 22X ± 3/16"/100 ft. (±5mm/30m) Up to 200’ (60m) 4’ (1.2m) 22mm ± 2’/100 ft. (±0.6m/30m) 5 4’ per 2mm Horizontal circle: Graduation diameter Graduations Number Vernier Weight Center screw thread 110mm 1º Each 10º, 0-90-0º Double direct to 15 min. 2.
2594H 7/29/09 10:12 AM Page 13 7. Care and Handling Care must be taken to maintain the accuracy of the instrument. • After each use, the instrument should be wiped clean and kept in its carrying case. • Remove dust from the lenses with a soft brush or a nonabrasive wipe. Never tough the lenses with your fingers. • Store the instrument in a dust-free area with low humidity. 8. Product Warranty Johnson Level & Tool offers a one year limited warranty on each its products.
2594H 7/29/09 10:12 AM Page 14 NOTE: The user is responsible for the proper use and care of the product. It is the responsibility of the user to verify the calibration of the instrument before each use. For further assistance, or if you experience problems with this product that are not addressed in this instruction manual, please contact our Customer Service Department. In the U.S., contact Johnson Level & Tool’s Customer Service Department at 800-563-8553.
2594H 7/29/09 10:12 AM Page 15 10. Accessories AccuLine Pro® accessories are available for purchase through authorized AccuLine Pro dealers. Use of non-AccuLine Pro accessories will void any applicable limited warranty and there will be NO WARRANTY. If you need any assistance in locating any accessories, please contact our Customer Service Department. In the U.S., contact Johnson Level & Tool’s Customer Service Department at 800-563-8553.
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