Introducing the AlfaMirage High Precision Precious Metal Tester, Model GKS-300, suitable for identification/testing of various precious metals. Made in Japan with a high-resolution scale of 0.001, this tester is perfect for jewelry tools and workbenches. The brand, Alfa Mirage, is well known for its quality products. This item is ideal for individuals in the jewelry and watch industry. Please note that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm, as indicated by the California Prop 65 Warning. Purchase this reliable and efficient tester today to enhance your jewelry manufacturing process.

GK series evaluate gold (platinum) by measuring specific gravity (weight in air and weight in water). 
Easy, quick, accurate, shows Gold K9 to K24 & %(percentage). 
Popular among Gold trader, buyer, Jewelry shop, Pawn shop, Gold mine, even some banks in some countries. 
No stain, no scratches, no chemical for testing. 
GKS-300 Measuring range 0.001 - 300 g Minimum sample weight 2 g Gold K9 - 24 & Purity 99.9% Platinum Pt600 - 1000 & Purity 99.9%

Unit comes with the plastic wind shield, power supply, plastic cover for controls. Everything works as should. No scratches, dents or stains.

This unit is very precise - up to 0.001g. Weight limit - 300g.