Interior layout instrument
I'm a one man shop and do a lot of stake-outs. They are all white boards, even against walls etc.
I have received some questions to do some layout in interiors. This would mean shooting reflectorlessly. This is difficult and tedious because i have to run back and forth all the time.
Do any of you have a recommendation for an instrument or method to use as a solo guy?
My gun (Topcon PS) puts a red laser spot on the wall when staking out reflectorless. Easy to put a target sticker or pen mark on that with out any back and forth.
Not necessarily reflectorless... take your peanut prism out of the housing and set the offset to zero. The point on the back of the prism is the "measured to" spot. You have to be careful to angle the prism directly back at the instrument but it works fine.
I do this all the time marking grid lines on face of concrete walls.
And for floor layout: check this out...
With a robotic total station:
Working from the gun, I stake the points reflectorless on tracking mode, storing the shot and doing my note form, then I go out front of the gun and stake out my store shots in standard mode with the controller marking the points as they are hit by the red laser.
If you are doing reflectorless staking on walls keep in mind that the measured distance starts to get bad after about 45 degree or so.
This is because reflectorless doesnt measure the distance exactly from the red dott but slightly off it. This is not an issue when shooting perpendicular.
If you want an accurate grid line stake on the wall with reflectorless you have to shoot it both faces and mark the mid point of those shots.
Ive experienced this effect to be worse with Trimble instruments. Leica reflectorless distance measuring point is smaller and more accurate.
Anyway, nowadays im using ball prism with a magnetic base for staking on walls