AJ10 D1 GPS Tribrach Adaptor Total Station Laser Plummet

AJ10-D1 Laser Yellow Tribrach for Total Stations, GPS, Topcon, Sokkia, Leica

Model: AJ10-D1

Specifications

Overview:

Yellow Adaptor with Optical Plummet

Topcon style

With locking forced-centering knob

5/8*11 base

8-minitue circular vial

The tribrach and optical plummet are of robust construction and suitable for long period exposure in all enviornments.

How accurate is a laser plummet?

With a laser plummet, you can find points both above and below a specific reference point, and you can do it more accurately than with a plumb bob. This laser measuring tool is used in a number of applications in the construction industry — from mining and elevator shaft alignment to tower observation and monitoring.

How do tribrachs work?

A tribrach uses an optical plumb sight for vertical orientation. Rough field conditions can jar the optical plumb sight out of adjustment, leading to inaccurate measurements by survey instruments mounted on the tribrach. Readjustment is relatively easy to do. Set up the surveyor’s tripod and attach the tribrach to the tripod head.

How do you adjust the plum on a tribrach?

Adjust the plumb. Most tribrachs have two small adjusting screws on the optical plumb arm under the instrument. One screw adjusts the cross-hair holder left to right, the other to and fro. Turning the screws simultaneously in opposite directions produces diagonal movement.

How do you make a tribrach on a tripod?

Mark a point on the floor, precisely level the tribrach, and center the image in the optical plummet. Draw a pencil line on the tripod head precisely outlining the tribrach. Rotate the tribrach 120 degrees and fit it to the pencil outline.

Can I use a tribrach with an optical plummet?

A tribrach can be used with an optical plummet or any other survey instrument, which can include but may not be limited to:

· Theodolite

· Total station

· GNSS antenna

· Target