1. Adjustable - 340 Postrite is unique between post levels, because it can collapse by folding or flat spreading like a book. Each 15 ° 'locked' to each 15 ° allows 340 postritis to be used in pipes or poles of any diameter. 2. Safety - Magnets to work on iron poles and pipes and magnets and wood, aluminum and plastic to attach strong elastic straps is a versatile, multi -purpose post level. 3. Visible - this level has 3 bright colored cylindrical bottles, including 2 horizontal and 1 vertical to provide clear and accurate readings. 4. Compliant - 340 Postrite, standard poles, pipes and signs, and can be used in plumbing, signal installation, after leveling and fence building. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store