FENO Survey Marker Accessories
The F300PHPLW 300mm (11.8") Square Photogrammetric Plate for the 350mm and 600mm spikes is a highly visible plastic target that can be used with the FENO mark for high altitude visibility.
The F50PLCAP 50mm (2") diameter Plastic Cap for the 350mm and 600mm spikes is ideal for projects where you need to have an easily visible mark that is flush with the ground.