Stabila stbpocketbas is a plastic basic mini format spirit level and is ideal for all horizontal measurements whether you are a professional trades person or a keen diy enthusiast this compact small but robustly designed little level will sit neatly in the pocket without discomfort for quick and easy access the new switch spirit level is ideal for positioning flush fitting switches and plugs to walls as with one hand you can hold the level with ease and comfort while getting sockets etc straigh