TrueAssay
Digital Calipers – 150mm / 6" (0.1mm Precision) for Jewelry
Digital Calipers – 150mm / 6" (0.1mm Precision) for Jewelry
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Precision 150mm (6") digital calipers with 0.1mm accuracy — measure jewelry, gemstones, coins, and small parts in inches or millimeters. Battery included. Essential for jewelers, hobbyists, and resellers.
WHAT'S INCLUDED:
• 150mm x 0.1mm Digital Calipers (battery included)
Measures inches and Millimeters
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Trusted by Industry Professionals
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Lab-Tested Quality
Each batch is formulated to professional-grade testing standards used by jewelers and refiners.
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Fast U.S. Shipping
Orders ship same-day from Atlanta, GA. Most U.S. customers receive in 2 to 5 business days.
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Helpful Customer Support
Questions about testing technique or kits? Reach our team for guidance before and after your purchase.
Frequently Asked Questions
How do I use the testing solution?
Rub the metal on a testing stone, apply a drop of acid to the streak, then compare the color reaction to the standard chart for that karat.
How fast does my order ship?
Orders placed before 2 PM EST ship the same business day from Atlanta, GA. Most U.S. orders arrive in 2 to 5 business days.
Are these solutions safe to handle?
Our acid solutions are professional-grade and should be handled with gloves and eye protection in a well-ventilated area. SDS sheets are available on request.
What's your return policy?
Unopened items can be returned within 30 days of delivery. Opened acid bottles cannot be returned for safety and shipping reasons.