The extension 1 wherein a spirit level clamp includes at least one resiliently hinged clamping member for bearing on {HEAD ~ a spirit levels} opposite face for clamping a spirit level in {TAIL ~ a spirit level extender} 
The extension 1 wherein a spirit level clamp includes at least one resiliently hinged clamping member for bearing on { HEAD ~ a spirit levels } opposite face for clamping a spirit level in { TAIL ~ a spirit level extender }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL