Tempo (Schmidt) Model G400 Automatic Precision Saw Blade Grinder (1995) Specifications Working speed steplessly adjustable, from 40 to 200 teeth per minute Built-in high-low-shift to grind the height difference between roughing and finishing tooth in one turn. Exactly guided rigid sawblade arbor, adjustable in height for chamfering. Separate motors for indexing gear and grinding wheel. Large grinding wheel (200mm diameter) brings high performance. Three different tooth forms (straight, flat and highly curved) selected by selection lever Autom infeed of the grinding wheel to the saw blade, electro-mechanical design, infeed depth preselectable between 0 and 3.8mm