Vertex Angle Plate 6″ X 5″ X 4-1/2″ Cast Iron. Made of high tensile cast iron. Webbed style accuratly ground square and parallel on outside faces and ends with 0.01mm per 100mm. A: 150mm, B: 126mm, C: 115mm, F: 10mm, G: 18mm, H: 30mm, I: N/A, J: 33mm, K: 35mm, L: 33mm, M: 24mm, O: 70mm, N: 13mm, P: 18mm. Weight: 3.8kg.