461 Automatic Tilt Measures "PSAW" with interchangeable ground fitting complete with conical flask with socket. 461/01 Capacity 1 ml., Reservoir Cap. 250 ml. 461/02 Capacity 10 ml., Reservoir Cap. 250 ml. 461/03 Capacity 15 ml., Reservoir Cap. 500 ml. 461/04 Capacity 20 ml., Reservoir Cap. 500 ml. 461/05 Capacity 25 ml., Reservoir Cap. 500 ml. 461/06 Capacity 2 ml., Reservoir Cap. 250 ml. 461/07 Capacity 5 ml., Reservoir Cap. 250 ml.