Much thought has been given to these sights to assist the user. Advantages which are not apparent to everyone and some we fear are in these advanced days taken for granted. For instance, great care is taken to ensure that the scale plates are flush with each other on both elevation and wind. This is very important for reading half minutes. The screws holding the zero plates have now almost square heads which are not so easily mutilated by the use of screwdrivers as are round heads. The corners of the sights are well smoothed and free from sharp edges. When the elevating or windage knob is turned one click (i.e., half minute) the sight moves that much with certainty.