The most versatile alignment scope with two micrometers for precise measurements in two directions perpendicular to the line of sight. It is an invaluable aid when highly accurate dimensional data of any point in space is required. Magnification increases to 46x at infinity focus. Micrometers Range .100″. Graduation 0.001″. Accuracy 0.0001″. Barrel length 10″. Overall length 17.75″. Diameter 2.2495 – 2.2498″.