The spirit level extenders 9 are preferably formed from extruded aluminum, and include a top surface 14 on which a spirit levels leveling face 2 is intended to be placed, and {HEAD ~ a bottom surface} 16 to be placed on {TAIL ~ a surface} whose inclination is to be determined  
The spirit level extenders 9 are preferably formed from extruded aluminum , and include a top surface 14 on which a spirit levels leveling face 2 is intended to be placed , and { HEAD ~ a bottom surface } 16 to be placed on { TAIL ~ a surface } whose inclination is to be determined
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