After a precision lathe, the most useful machine tool for the watchmaker is undoubtedly a sensitive miniature drill. Although Bergeon manufactured stand-alone drills - which could be run from the lathe countershaft - they also offered a beautifully-made attachment which converted the lathe into a drilling machine. The unit was formed with a hole to accept the lathe bed, and a bracket that slotted into the standard lathe foot.
The Drilling Attachment was a self-contained unit with a lever feed and micro-adjustable stop
The Bergeon No. 1638 Precision Drilling Machine. The motor unit, and Adjustable Driving Attachment, were both identical to those used for the lathe