Reply To: Turns/ lathe

[david pierce]

Randy,
By the way, if you ever get a chance to look at a beautifully polished shinny watch through a 40x or even a 20x microscope what you will see will give you a whole different perspective on the subject of precision. You will not be able to see this with a loupe. As the optics become more powerful the depth of field decreases to a point where the human body can’t maintain the focusing distance. This is why watchmaker loupes usually go up to 10x and are generally not available in more powerful sizes. in any case the gears, pivots, plates and other parts at 20x or 40x look like they were formed with a chisel and sledgehammer.
David