SLA1000 – Teng Aluminium Spirit Level 1000mm Easy to hold aluminium profile measuring 24x50mm. Crush-proof tubular vials that are highly transparent and durable. Highly resistant to ultraviolet light and temperature fluctuations. The bubble is not affected by static electricity. Shock absorbing end protectors. Weight: 690g Dimensions Length: 1000mm Width: 24mm Height: 50mm Tolerance Normal: 0.5mm/m Upside Down: 0.75mm/m