The GMP111 Mini Prism is a basic surveying prism that comes in a polymer mount with a bubble and a 1/4″ thread fitting and it has an advertised IR range of 2000m.
The Leica GMP111 surveying prism is typically used with a GLS115 four-section minipole and it is ideal for accurately picking up details when surveying.
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Leica GMP111 Mini Prism FAQ
Below is a list of frequently asked questions about Leica GMP111 Mini Prism.
What is the prism constant for the Leica GMP111 Mini Prism?
The absolute prism constant (true value) for the Leica GMP111 Mini Prism is -16.9mm. The prism constant as defined for Leica instruments for Leica GMP111 Mini Prism is 17.5mm. For a more detailed explanation on prism constants please see this article.
Can I use the Leica GMP111 Mini Prism with a Leica instrument?
Yes, you can use the prism with a Leica instrument as long as you set up the correct prism constant in the instrument settings.
What is the prism constant value that I need to use with a Leica instrument?
In order to use the Leica GMP111 Mini Prism with a Leica instrument you should use 17.5mm as the prism constant value.
What is the height offset of the Leica GMP111 Mini Prism?
The Leica GMP111 Mini Prism height offset is 50.0mm. This is measured from the mounting point to the centre of the prism.