SPENCERS Automatic Knife Sharpener is designed for safe, quick, efficient & convenient on-site re-sharpening of microtome knives. It automates the process of manual knife sharpening to eliminate unevenness of the surface and ensures equal bevel angle giving a used knife edge the sharpness of a new or factory-reconditioned knife. With its compact & portable structure, built with advanced technology SPENCERS Automatic Knife Sharpeners deliver convenient use, reliable performance ensuring trouble free & dependable service.