Far less common than the very popular Clarkson tool and cutter grinder, the Dormer Model 53 was introduced during the early 1960s. Claimed to offer a "New approach to cutter grinding", the machine was able to undertake what was described as the continuous form grinding of complex cutter profiles. However, with its frictionless, roller-supported main slide in the zero position could be employed as a conventional model and undertake all the routine work expected of that type.
So-called "peripheral form grinding" using templates had the claimed advantage of giving  more constant clearance angles along the entire tooth profile consistent with the removal of less metal and the ability to made modifications to existing shapes.
Operation was by the combination of one lever being moved radially and the biased linear movement of the main slide - the combination of these two maintaining contact between template and follower and so generating the required profile. Further details are in specification sheets reproduced below.