TI Matrix
From Graces Guide
1969 Tube Investments acquired Coventry Gauge and Tool Co, makers of "Matrix" tools, to join its other machine tool companies[1]
1974 Within Tube Investments' newly constituted Machine Division, the machine tool group included: Charles Churchill, Matrix Machine Tools, Matrix Engineering, Newcast Foundries, Matrix-Churchill International and Matrix-Churchill Corporation of USA; Walter T. Lees was appointed managing director of this group[2]
1978 A much modified TI Matrix grinder achieved a ten-times increase in productivity[3]
1980 Sales of TI's numerically controlled machine tools, TI Matrix and TI Churchill hit a record[4]
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