Stone watch parts.
What does a Hand Stoner do?
Stones watch parts, such as winding wheels and clicks, to specified thickness, using blocking equipment and polishing stone: Adjusts stops on block corners to specified height indicated by gauge, using screwdriver. Brushes block surface with vaseline to hold wheels or clicks in place. Fits wheels or clicks over protruding pins of block, using tweezers. Places block, face down, on stone. Fits projecting pin of handle in block recess and rubs block against stone with circular motion until touch indicates parts are stoned to size. Verifies thickness of part, using loupe and indicator gauge.