sentences:  He invented a 'typometrical' system, facilitating the use of a large number of foreign alphabets with ornamental type to be used in printing.This was described in his work "Der polygraphische Apparat der Wiener k. k. Hof- und Staatsdruckerei" ("The Polygraphical Apparatus of the Viennese k. k. Court and State Printer").Auer's directorship at the Royal and State Printing oversaw many advances in automatic high-speed press, copperplate press, and new typographical processes.