Precise Prism System for Railway Track Control Marks
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This German-made prism assembly replaces hand-held methods of coordinating track control marks
It is widely used in Europe for accurate railway surveys including traverse and resections.
The anodised aluminium & stainless steel body attaches to 12mm TCM brass bolts.
The prism can be rotated in two axes and levelled with the built-in bubble.
Prism diameter: 38mm, Leica zero constant. Height of prism 100mm above bolt.
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