Are laser levels that can tilt a self levelling horizontal beam without a lock a thing? I was looking at a Stanley Cubix or at a push a Dewalt DW088K, but as far as I understand it the Cubix will only do this with lock & the Dewalt would need to be positioned at the same height as the line with a bracket / magnet. I may well be wrong, but beam lock seems to defeat the purpose as I'm going to have to check with a string or level if the beam is level & this is what I'm trying to avoid. I've got a supporting frame of Unistrut to put up, about 3M above floor level that needs to be level, access for ladders is problematic so lines/bubbles wouldn't be ideal & there isn't really anything suitable for easily mounting the laser at the correct height. Any suggestions appreciated.