From advanced production facilities in the UK, USA and China, PTG Holroyd Precision Rotors uses PTG Holroyd machine tools to manufacture ultra-precise helical components. At the forefront of helical screw and rotor design and manufacturing for more than 60 years, we offer screw and rotor prototyping as well as batch and volume production. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.