Hunt (Churchill) Drill Grinders Models DG100, DG23, DG2A, DG3S, DG3A & GG23etc. Operator's Instruction Manual. Parts Manual for the DG100 as Sectional Drawings with Sales and Specification Catalogues. These instructions apply to all types and sizes of "Hunt Patent" drill grinder.

MATRIX (Coventry Gauge and Tool Company) No. 37 (Types 1, 2, 3 and 4) Plain Thread Grinders. Parts Manual as Sectional Drawings.

MC510GP Matrix (Coventry Gauge and Tool Company) Type GP900 Roll Grinder. Operator's Manual.

Thread Grinding by Matrix (Coventry Gauge and Tool Company) Thread Grinding - History and Development of thread-grinding techniques.

Matrix (Coventry Gauge and Tool Company) - a useful primer on the subjext: "Thread Grinding an Interesting Part of its History and Development".

Matrix (Coventry Gauge and Tool Company) "Thread Grinding". Highly detailed publication titled: "Operator's Machine Hand book". Explains every detail of the process.

Matrix (Coventry Gauge and Tool Company) No. 1A Cylindrical Grinding machine: Operator's Instruction and Lubrication Manual with electrical schematic.

Matrix (Coventry Gauge and Tool Company) No. 1A Cylindrical Grinding machine: Parts Manual as Sectional Drawings. Includes a detailed Sales and Specification Catalogue with annotated diagrams, electrical circuits, a foundation plan, lubrication diagram and clear descriptions of the machine's construction functions.

Matrix (Coventry Gauge and Tool Company) Model 37 Automatic Indexing Worm Grinding Machine (Coventry Gauge and Tool Company). Detailed Operating Manual and Maintenance Guide.

Matrix (Coventry Gauge and Tool Company) 55 and TT-712 Tap Grinding Machine. Detailed Service Manual with Parts as Sectional Drawings

Matrix (Coventry Gauge and Tool Company) Type B and BB Surface Grinding Machines (sometimes badged Thompson-Matrix). Operator's Instruction Manual with Maintenance & Trouble-shooting Guides, lubrication and hydraulic charts and detailed technical descriptions of the machines.

Matrix (Coventry Gauge and Tool Company - a design by Hunt ) DG100 Drill Point Grinding Machine. Operator's Instruction Manual with Parts Manual as Sectional Drawings.

Matrix (Coventry Gauge and Tool Company) No. 10 Thread Grinding machine. Operation Instructions.

Matrix (Coventry Gauge and Tool Company) No. 16 Universal Tap and Thread Grinding Machine. Operator's Instruction and Maintenance Manual.

Matrix (Coventry Gauge and Tool Company) No. 2 Cylindrical Grinding Machine. Detailed Operator's Instruction and Maintenance Manual.

Matrix (Coventry Gauge and Tool Company) No. 33 Thread Grinding Machine. Detailed Operator's Instruction and Maintenance Manual with Parts as Sectional Drawings.

Matrix (Coventry Gauge and Tool Company) No. 37 and No. 47 Type 3 Taper Thread Grinding Machines. Operator's Instruction and Maintenance Manual with Dismantling Instructions.

Matrix (Coventry Gauge and Tool Company) No. 37 and No. 47 Type 2 Plunge-cut Thread Grinding Machines. Service and Maintenance Manual with Parts as Sectional Drawings and Dismantling Instructions. Stored FC2-D1

Matrix (Coventry Gauge and Tool Company) TL21 No. 66 Small Diameter Internal Thread Grinding Machine. Instruction Book.

Thompson / Matrix (Coventry Gauge and Tool Company) Type B and BB Surface Grinding Machines (sometimes badged Matrix-Thompson). Operator's Instruction Manual with Maintenance & Trouble-shooting Guides, lubrication and hydraulic charts and detailed technical descriptions of the machines.