Machine Recycling Discussion and Moderated Newsgroup > Components
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> Topcon at-G4 automatic level calibrated surveying
Topcon at-G4 automatic level calibrated surveying
* - Accuracy 2.0mm over 1km
* - Dry Nitrogen gas sealed telescope
* - Water tight construction to IPx7
* - Magnetically damped Topcon compensator for accuracy and durability
* - Concave base for quick set up on dome head tripods
* - Short minimum focus distance (0.5m)
* - Dual side clamp-free fine horizontal adjustment
* - Robust construction for daily site use
