Water permeability test apparatus

According to DIN 18130-1, CEN ISO/TS 17892-11. For constant head permeability of sand or gravel with deairing tank. Rack with two height adjustable overflow tanks, two piezometer standpipes with scale as well as deairing tank and vacuum pump.
Measurement range: up to 10-³ m/s.
Dimensions: (W x D x H) = 1000 x 600 x 1700 mm