The stabila 10"81SREM magnetic level is great level for scaffolders due to its strong magnetic force from the three equally placed magnets on the bottom. Its frame is a heavy duty die cast frame, its big bright yellow frame makes it noticeable has bright easy to read vials. Its has been certified to level accuracy in the top read position (1/32 over 72) level accuracy guaranteed for life vials will never leak never fog or require adjustment.