CLARKSON Tool & CUTTER GRINDERS - also branded Smart & Brown, March, "Virginia Beavermil" and DeVlieg. A complete 192-page data set for the Mk.1, Mk.2 & Mk.3 machines together with all the supplementary booklets (originally published separately) for the Controlled Spiral Grinding Attachment, Mk. 2 Radius Fixture, Drill Point & Tap Lead Attachment, Air-bearing Flute Grinding Attachment and a comprehensive Accessory Catalogue titled "Tool & Cutter Care" that is useful in showing the range & mounting of the various Accessories.