Clarkson Tool And Cutter Grinder. Mk 1 and Mk. 2 (also badged as Smart & Brown, March, Virginia Beavermill and DeVlieg). Illustrated Operator's Manual. Included is a separate early edition that shows, in greater detail, how to set up many common tool-grinding jobs. This manual can be used to help with other makes of cutter grinder for which Instructions are not available.