That CMI laser is more money but has half the accuracy and range of the CST in the link you posted earlier.
I never really use the dual slope much, but use the single slope a lot. I have also used my lasers when our pipe laser quit and had to got to the shop for repair. Basically just set it at the end of the pipe and set the slope I needed for the pipe and just used the rod on top of the pipe.
How to set the slope:
For our LM800 which does not have a digital readout lcd screen. I first set it to level automatically. Then figure what the height difference will be for a given slope, 1.5% slope in 100 feet height 1.5 feet higher at the other end. Then use the remote control until I get that difference.
With our ALGR its easy, just use the remote or the buttons on the laser and set it to 1.5% on the screen.
So a LCD screen model is the way to go.
OK lets summarize what's out there:
1. the basic manual leveling type with no slope feature
2. the basic auto self leveling type without slope feature
3. auto self leveling with manual slope feature
4. auto self leveling with dial in grade control
5. auto self leveling with dual slope
So the problem is that I have champagne taste but a beer budget, would love number 5 but the budget will only stretch to number 3 in the brand name range.
I suppose one way to look at it is to say that 90% of my work is level and 10% is slope/pipe work, thus the time spend in setting up a manual grade is not that big a deal and if I find that the ratio changes I can always upgrade my laser level at a later date.
The one big consideration I do have is expanding my skills/capabilities in regards to what I can do. I have never worked with dual grades but would like to know how to do it. I suppose that is like a mechanic who works on domestic cars wanting to be able to work on a Ferrari. However the finances are tight due to some unexpected costs and the dual grade level might have to wait unless I take a punt on those Chinese cheapies on fleabay.
Anyway I feel I am getting closer to getting the right machine for my current needs and situation.
) and they always have a spare for hire. Mine is an old David White and I now have the Rugby 100. I think the Rugby 50 is very good value if you don't do slopes.
