Quantity: one piece Precision (mm): 0.01 Net weight (g): 300 Length (mm): 13cm material: metal Measuring range (mm): 0.1-13 cm Width (mm): 1.9 cm 4 BOTTLES: Easy to read torpedo level with high visibility bubbles, available in 4 angles: 0/30/45/90. These vials have an accuracy of 0.5 mm/m for clear and precise measurements. The large top-view bottle window allows easy reading from multiple angles: front, back or top. STRONG MAGNETICITY: The 4 magnets have strong adsorption magnetism, providing excellent adsorption force, the torpedo level can be attached to iron pipes, pipes or other metal surfaces. The magnetic design frees your hands so you dont need to hold the spirit level all the time. Durable materials and thumbscrews: Made of aluminum alloy for excellent durability and high accuracy. Thumbscrews attach the spirit level to the pipe to measure the angle as it bends. This function is convenient for measuring water pipes. V-groove and double scale: The V-groove edge means this sports car grade has legal stability on cylindrical materials like PVC pipes and conduit. This grade of tool also offers accurate measurements in SAE and metric for different measuring needs. Practical and Wide Application: This grade is lightweight and small in size, making it easy to carry and to store, especially in tight spaces. Torpedo levels are designed for decoration, furnishing and related calibration work such as measuring positions on walls, spaces between hangers and leveling dowels. Good quality product p