GMP104 L-bar Monitoring Prism

• Prism diameter: 25.4mm; Coating: Copper; Accuracy: <5" .

• Frame Material: Aluminium alloy. 

• Constant: 8.92mm; Range 800m-1000m. 

• Dimension of L-bar is 75*75mm with Ø8 or Ø10 hole.

• Ideal for deformation surveys, mining surveys, or where permanent mounting is needed.