Product Manual

1. Screw in white plastic bolt “Adapter” into bottom

of U-joint.

2. Place the spare plumb bob tip provided upside

down in bottom adjust plate.

3. Using a Plumb bob and 6-12 ft. Gammon Reel,

hook the plumb bob line through eyelet on the

adaptor. Lower the plumb bob down until it almost

touches the upside down plumb bob point.

4. Loosen nut on the bottom adjusting plate using a

1/2” wrench and move the plate so both plumb

bob tips line up with each other.

Note: You can also take out the upside down

plumb bob tip and lower the plumb bob down

into the hole. Then adjust the plate until you

have equal light around the hole. (Picture #4)

5. Tighten nut back so plate is secure. Unhook

gammon reel and put adaptor back in hole on top

of the True Plumb.

6. Screw top of prism pole into U-joint and place

prism pole point into the hole in the bottom plate.

Now your prism pole is level. If your bubble is

not level adjust three adjusting screws under level

bubble to bring it into level. You can also rotate your

prism pole to make sure it is not bent. Note: If the

bubble moves out of level when you rotate the

prism pole the pole is bent or the True Plumb is

not calibrated 100%.

Calibration:

TRUE PLUMB

Tip:

Adjusting Level Bubble.

Most level bubbles have

three screws to adjust the

level bubble. You should

only have to move one

or two screws a slight

amount to bring bubble

back into center. If you

have to move the screws

a lot make sure screws

are tightened evenly

when bubble is level.