Matrix (Coventry Gauge and Tool Company) Measurement of Threaded Components. An unusually detailed Catalogue with explanations of how to use the various thread checking machines made by the company. Please note; this is a catalogue not a manual.

Matrix / Kand UX Optical projectors. The Care and Use of instruction Book.

Matrix Clutches. Whilst not a manual this comprehensive Sales and Specification catalogue contains detailed (and dimensioned) Sectional Drawings, application examples and instructions on fitting, adjustment, dismantling and Maintenance.

Matrix (Coventry Gauge and Tool Company) Universal Single-Ribbed Wheel Generating Machine. Operating Instructions.