Magnetic small bubble level 52x15x20mm three line horizontal bubble high precision square spirit levels for turntables, tripod, phonograph, photo frame. Package: 4 Pieces x Bubble Level(with Magnetism on Backing). Magnetic Level. With magnet is absorbed onto the iron- or steel-surface to show its level. Use: For leveling construct, tiling tiles, suspended ceilings, furniture placement etc. How to use: Place it where it is measured, and the bubble is in the middle is horizontal. Horizontal bubble square spirit level precision spirit bubble measuring kit, for leveling picture frames, art frames and murals, hanging pictures etc. Mini square high precision green bubble level set accessories use for leveling camera, tripod, machine, instruments, small square spirit level set green bubble level horizontal mini level for leveling shelf, woodworking, desk, table, wall hanging tv, tv rack etc. Small square spirit level set green bubble level horizontal mini level for leveling shelf, woodworking, desk, table, wall hanging tv, tv rack etc. Square mini spirit level bubble small leveler spirit degree mark surface level measuring tools, mini levellers, use to level canvas before painting, convenient to use.