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