Gold Test Needles-Set Of Four-10K-14K-18K & .999 Silver Electroplating Rectangular shape for easy handling

Rectangular shape for easy handling and bench use

740) or stainless steel (110

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

these studs are purpose-built for the piercing process — combining surgical-grade materials

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

Gold Test Needles-Set Of Four-10K-14K-18K & .999 Silver Electroplating Rectangular shape for easy handlingGold 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