TRI ELECTRONICS GT-4000 ELECTRONIC GOLD TESTER 6-24K DETECTION
Detects karat value of the gold from 6 to 24 karats. Also detects platinum and separates solid gold items from gold plated ones. Provides a numeric reading on the LCD display that corresponds to the karat table.  Manufacturers repair/replacement warranty.     Specifications / Features:    Size: 12 x 9 x 2 (305 x 254 x 50mm)      Weight: 1.5 lb (0.7 kg)      Power: two 9 volt batteries    LCD Display