Features• Fully usable 340mm screen• Digital screen protractor• Built in helix adjustment• Sturdy all-steel design• Cross roller bearings• Quick release ‘X’ and ‘Y’ travel• Erect image• Easy-view vertical screen• Large stage travel 10"(250mm) x 5"(125mm)• Rotating chart clips• Fibre optic illumination for surface measurement• Includes 10x lens