Gold Test Needles-Set Of Five-8K-10K-12K-14K & 18K Economy Overall Length 140 mm (5-1/2")

Overall Length 140 mm (5-1/2") Round Opening Diameter 10 mm (13/32") Brand Eurotool What's Included

this punch eliminates the need for a mallet and reduces the risk of slipping or misalignment

red for simulant

the impact strength is adjusted independently by twisting the impact controller ring directly on the handpiece body

Author Oppi Untracht Format Hardcover Subject Jewelry design

Gold Test Needles-Set Of Five-8K-10K-12K-14K & 18K Economy Overall Length 140 mm (5-1/2")Gold test needles are an essential tool for jewelers and precious metal buyers who need to verify the karat purity of gold items using acid testing. This set includes five needles spanning the most commonly encountered gold karats 8K, 10K, 12K, 14K, and 18K giving you a comprehensive reference range for comparative acid testing. To use, select the appropriate karat needle and rub or scratch it against a test stone. Make a second mark on the stone with