|  |  | Working on Grinding Machines (Institut für Berufliche Entwicklung, 12 p.) | 
|  |  | (introduction...) | 
|  |  | Preliminary Remarks | 
|  |  | Instruction Example 07.1.: Stool Plate | 
|  |  | Instruction Example 07.2.: Stool Plate | 
|  |  | Instruction Example 07.3.: Stool Plate | 
|  |  | Instruction Example 07.4.: Door-Frame |