Los Angeles Abrasion Machine used to determine the resistance of aggregates to abrasion. This version is prepared to be installated in a locally provided safety area and is equipped with a door safety switch to be installed locally. Comprising the steel frame sample tray and Los-Angeles-steel cylinder, rotated about its horizontal axis with 32 1/min. by an electric motor. Incl. automatic counter, stopping the machine after reaching the required numbers of ratation. Without abrasive charges – see below.