hi all,a question regarding getting a level all around your room,,so far on the 3 jobs i have done i have set out using my guage baton then setting a baton to the wall set out tiling round the room using a checked level baton as i go along i have not used a chalk line or water or laser level yet at all for double checking my line is marked on the weall before i start as i thought as long as my batons were spot on id be fine and have had no issues so far ...thank god!! anyway would it be more proffesional and sensible to use one of these 3 levels to mark my lines 1st before or do most of you guys not use these for domestic bathrooms etc? i do have a chalk line marker and a water level but all jobs iv done so far has just been myself and bit difficult to use these alone isnt it?