Harbor Freight Tools 69243 manual Horizontal Beam Level Accuracy End to End

Horizontal Beam Level Accuracy (End to End)

1.Set up the instrument with the Tripod approximately 16 ft. from the wall. Ensure the Rotary Base is level.

2.Push the Pendulum Lock to the right to free the pendulum. See Figure 1 on page 3.

3.Press both the horizontal and vertical buttons to project a laser cross on the wall, mark point a 8 ft. from the intersection of the beams

to the right on the horizontal beam.

4.Turn the instrument until the vertical beam has moved 16 ft. to the right side, and mark b 8 ft. from the intersection of the beams to the left on the horizontal line. See Figure 6.

8 ft.	8 ft.
	a
	b
	16 ft.

Figure 6

5.If the distance between a and b is less than or equal to 2mm, the accuracy is within tolerance. Otherwise, take the instrument to a qualified technician for repair.

Vertical Beam Level Accuracy (End to End)

1.Set up the instrument with the Tripod, approximately 16 ft. from the wall. (The wall should be at least 17 ft. high). Please ensure the Rotary Base is approximately level.

2.Press both the horizontal and vertical buttons to project a laser cross on the wall, mark point A 8 ft. above the intersection of the beams on the vertical beam.

3.Use A as a starting point and nail one end of a string with plumb bob (not included) on A. The length of the string should be 16 ft.

4.Mark M1 16 ft. from point A on the string.

5.Mark M2 8 ft. below the intersection of the beams on the vertical line.

6.Measure the distance between M1 and M2.

7.If the distance is less than or equal to 2 mm, the accuracy is within tolerance. Otherwise, take the instrument to a qualified technician for repair.

Page 6 For technical questions, please call 1-800-444-3353. SKU 69243