The apparatus consists of two brass-made cylinders with a hook. The one cylinder is inside the other one. The external cylinder has an open base, but the internal cylinder is closed. This apparatus has been repaired. Identifier: MP 040.0 DataInventory Number: hyd23Materials: BrassInstrument Categories: Hydrostatics / Hydrodynamics PlacesLocation: Πρότυπο Πειραματικό Γενικό Λύκειο Μυτιλήνης, Πανεπιστημίου Αιγαίου - Model Experimental High School of Mytilene of the University of the AegeanOrigin: Πρότυπο Πειραματικό Γενικό Λύκειο Μυτιλήνης, Πανεπιστημίου Αιγαίου - Model Experimental High School of Mytilene of the University of the Aegean