Leica Monitoring Mining Prism GPR112 Surveying Reflector Prisma
Model: GPR112
Description:
GPR112 Monitoring-Mining Prism with M8 internal threat in the back
for direct mounting and 5/8‘’ adapter.
Technical Data:
| Model | GPR112 |
| Brand | Leica |
| Color | Yellow |
| Thread | 5/8’’ |
| Used For | Long range measurements |
| Prism Diameter | 60mm |
| Rain/Snow Cover | Available |
| Range | 2,500m(8,200ft) |
| Prism Type | Monitoring Prism |
Overview:
1. For monitoring
2. With rain shelter
3. M8 or 5/8’’ threaded bolts
4. Built-in filter
5. Range 2,500m (8,200ft)
6. Large Diameter
Features:
- 60 mm long-range mining & prism monitoring
- Mounting kit with 5/8" and M8 adapters
- Weather shield to protect front of prism from rain, dust & snow
GDZ112 Rain Shelter for GPR112
Rain shelter for monitoring prism GPR112. Full availability of the
prism even in rainy and snowy conditions. The rain shelter protects
the prism front against rain drops, snow and dust.
Whole Set Includes:
Prism GPR112
Mounting set GHT112 for GPR112
Rain shelter GDZ112
Packing:
Paper Box
Other prisms available:
GPR1
GPR121
GPR111
GMP111
GRZ101
GMP104
GRZ4
GRZ122
MPR122
What is the offset of a Leica prism?
Similarly, if you are working with a 0mm offset prism (or
reflective tape), you will need to add 34mm. You get the idea.
Remember, with a Leica instrument the Prism Constant Field is
actually the correction you need to enter relative to -34mm, NOT
the actual prism constant (offset) of your prism.
How to set prism constants on a Leica lift?
SETTING PRISM CONSTANTS ON A LEICA TOTAL STATION First a primer on
Prism Constants (also called Prism Offsets), more correctly called
Absolute Prism Constants (APC). Refer to Figure 1 to understand
that an EDM needs to be “told” what prism you are using to
correctly calculate the distance to the Vertical Axis of the prism.
How does a survey prism work?
Survey prisms can be used with another electronic distance
measurement (EDM) device to determine the distance of an object
from a specific survey point, and they’re often attached to a prism
pole so they can focus on a specific position.
Corner cube prisms (also called “ retroreflectors”) are often used
for this type of measurement, and they will have some type of
offset because the beam being transmitted from the device takes
longer to leave the prism (especially from longer distances). This
can be corrected by using a feature that accounts for this offset
in relation to the plumb line of the surveying prism pole.
