HTcable Compatible GKL211 Battery AC DC Charger for GEB211 GEB212 GEB221 GEB222 Battery, for Leica Total Station TS09

so I'll talk about all the different parts of the total station so at the bottom here we've got the foot screws which are used for the leveling stage of setting up we've got a circular bubble here also known as a pond bubble this is the optical plummet so when I sight into there that gives me a view and vertically downwards from the true center of the total station there's a through the vertical axis so when I look into the optical plummet what I see is the physical nail in the ground which we know the coordinates off and when I turn that that focuses the object that I'm looking at in the ground and then the one closest to the eye here focuses the black circle so you need to make sure that they are crisp and clear in relation to each other and that you hope that the circle is is nice and sharp and black on this particular instrument we've got a lock so when that lock has turned we can't