Home › J › Jeweling Caliper Rest

Jeweling Caliper Rest

This tool will be found very useful for setting. jewels in plates or settings, in counter sinking for screw heads, opening wheels for pinions or bushings, turning barrel heads, etc. The sliding jaws of the calipers should be so adjusted that when the swinging part is brought back snugly against them, the front cutting edge of the cutter in the sliding spindle will exactly line with the center of the lathe spindle. Then if the calipers are at the right height, when a jewel or jewel setting is placed in the jaws of the caliper it will move the edge of the cutter outward from the lathe center just half the diameter of the jewel then in the caliper, and the cutting made at that distance from the center will exactly coincide with the size of the jewel to be set. If however, if set and worked as above, it is found that the hole cut is too large for the jewel, it will indicate that the calipers are too low down, and should be raised, provision for which is made in the construction of the tool. If on the other hand, the cutting is found too small to fit, it will indicate the calipers should be lowered. The final cutting for the jewel seat should be made by running the center straight inward from the face of the plate; the adjustable screw stop on the back end of the sliding spindle serving to gauge the depth of the cutting.