Large Flanged Metal Circular Angle Spirit Bubble, 90mm, Surface Level C Product Highlights Flanged in Acrylic with clear Liquid. 90mm outer diameter. Inner diameter 71mm Bigger size for stable positioning, surface level. Metal Housing for outdoor use Use in and out of the home for accurate levelling and degree offset feedback Circular Spirit Level Product Description Housed in acrylic with clear Liquid with a measuring grid for accurate readings. Quality Circular Spirit Bubble Level Levels in all directions with easy reading through black radius marks. Perfect for levelling large surface areas. Levels on any surface in seconds. 1000s of uses at home or in the office. Bigger size ensure stable positioning and clear indication of any sloping. Outer 90mm Inner 71mm