Ideal for inspection of Deep Bores Blind Bores From 003.00 mm to 200 mm Diameter with:- Standard 2-Jets, For Size , Taper And Ovality For deeper bores suitable extension provided. Jets placed near to the face for blind bore. For specific depth or land width checking adjustable depth collars can be provided.Contactless Gauging ensures longer life. Accuracy within a Micron. Requirements - clean air at 45