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AccuLine 40-6910 Instruction Manual

Manual is about: 22X Builder’s Transit Level

Summary of 40-6910

  • Page 1

    ©2009 johnson level & tool rev.1 1 22x builder’s transit level model no. 40-6910 instruction manual congratulations on your choice of this 22x builder’s transit level. We suggest you read this instruction manual thoroughly before using the instrument. Save this instruction manual for future use. ® 2...

  • Page 2: Table of Contents

    2 ©2009 johnson level & tool table of contents 1. Kit contents 2. Features and functions 3. Location of parts/components 4. Operating instructions 5. Calibration 6. Technical specifications 7. Care and handling 8. Product warranty 9. Product registration 10. Accessories 1. Kit contents description q...

  • Page 3

    ©2009 johnson level & tool 3 3. Location of part/components focusing knob leveling vial vertical tangent knob eyepiece horizontal graduated circle horizontal vernier telescope objective lens leveling screw vertical arc lock lever vertical lock knob horizontal tangent knob base vertical vernier 2595h...

  • Page 4: 4. Operating Instructions

    4 ©2009 johnson level & tool 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...

  • Page 5: Aiming and Focusing

    ©2009 johnson level & tool 5 keep about half the length engaged. When the bubble is centered in posi- tion #1, turn the instrument and observe the vial in position #2. Now cen- ter the bubble in position #2 using only screw c. The instrument should now be leveled, but to be certain, double-check. Ro...

  • Page 6: The Vertical Vernier.

    6 ©2009 johnson level & tool in the illustration to the right, 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...

  • Page 7: One-Half

    ©2009 johnson level & tool 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 th...

  • Page 8

    8 ©2009 johnson level & tool 5.3 instrument accuracy adjustment if the error is more than 3/16” at 100’, it is necessary to adjust the instrument. When adjusting the instrument: 1. Remove rubber cover to expose the two calibration set screws. 2. Using a 1.5mm allen wrench, loosen the two calibration...

  • Page 9

    ©2009 johnson level & tool 9 5.5 determining difference in elevation measuring a difference in elevation from one set-up to find the difference of elevation between two points which can be observed from one position, set up and level your instrument about midway between these points. Be sure that a ...

  • Page 10: One Set-Up

    10 ©2009 johnson level & tool 5.6 measure the difference in elevation requiring more than one set-up if two points are either too far apart or at too great a difference of elevation to be observed from one set-up, the procedure shown below is recommended. This example assumes that you want to find t...

  • Page 11

    ©2009 johnson level & tool 11 5.7 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 fee...

  • Page 12

    12 ©2009 johnson level & tool 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. Swing the tele...

  • Page 13: 6. Technical Specifications

    ©2009 johnson level & tool 13 6. Technical specifications telescope erect magnification 22x leveling accuracy ± 3/16"/100 ft. (±5mm/30m) working range up to 200’ (60m) minimum focus 4’ (1.2m) clear objective aperture 22mm field of view ± 2’/100 ft. (±0.6m/30m) number of lenses 5 level vial 4’ per 2m...

  • Page 14: 7. Care and Handling

    14 ©2009 johnson level & tool 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 y...

  • Page 15: Note:

    ©2009 johnson level & tool 15 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 ...

  • Page 16: 10. Accessories

    16 ©2009 johnson level & tool 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 accessor...