Features 3 Axis Bubble Spirit Level with three levels of bubble instructions After using the level night wide angle scenery no longer appear scene skew situation Easy to use is a good helper for outdoor photography Easy to read viewing bubble The bubbles can be gathered within 2 second after impact Bubble in the middle is the Balanced state Crystal like transparent Light transmittance up to 92 Suitable for most digital film SLR cameras with universal hot shoe such as for Canon EOS series PowerShot G seriesfor Nikon D series Coolpix P seriesfor Pentax K seriesfor Olympus E series PEN E seriesfor Leica M seriesNot for Sony Minolta Alpha cameras because of different hot shoe design Specifications Material AcrylicColor of division line BlackType 3 AxisColor GreenSize 25 x 21 x 21mm 0 984 x 0 984 x 0 827 inches Packaged Included 1 x 3 Axis Spirit Level