AJ10-D1 Laser Yellow Tribrach for Total Stations, GPS, Topcon,
Sokkia, Leica
Model: AJ10-D1
Specifications
| Model | AJ10-D1 |
| Color | Yellow |
| Optical Plummet | YES |
| Weight | 860g |
| Material | Aluminum |
| Package | Individual Box Package |
| Accuracy | Torsional stiffness <2" |
| Type | Survey Instrument Accessory |
| Bubble | 8' Circular Bubble |
| Used For | All motorized instruments |
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
