Gold Test Needles-Set Of Four-10K-14K-18K & .999 Silver Electroplating Two monocular lenses for high-magnification

Two monocular lenses for high-magnification single-eye tasks: 4X and 7X

Manufactured to exacting production standards using a combination of machine cutting and hand craftsmanship

The shelf attaches directly to the GRS fixed mounting plate (104

this indicator light illuminates whenever the unit's heating element is actively engaged—giving the operator a clear

Compatible with ring cutter blades 148

Gold Test Needles-Set Of Four-10K-14K-18K & .999 Silver Electroplating Two monocular lenses for high-magnificationGold test needles are an essential tool for jewelers performing acid based metal testing. This set of four needles covers three gold karats 10K, 14K, and 18K plus . 999 fine silver, giving you a reliable reference for the most commonly tested metal finenesses. To use, select the appropriate karat needle and rub or scratch it against a test stone. Make a corresponding scratch or rubbing with the item being tested alongside the needle mark. Apply a drop