The Copying Attachment followed the normal design for this type of accessory but instead of the tracing tool being kept in contact (with the shape to be copied) by hydraulic power, as on more modern lathes, a very heavy weight was used, suspended by a cable over pulleys and operating through the cross-feed screw.
The weight was stationary, and so relieved the carriage of extra weight, whilst the thrust from the cut was taken on two heavy studs pressed directly into the carriage casting.
The form to be copied was produced as a flat plate and bolted to an angle bracket on the rear of the lathe bed; this bracket was adjustable though a small arc to allow for final setting of the work after trial cuts had been made.