Measures Diamonds and Gemstones within 0.01 mm accuracy.

When you travel with one of these handy, battery-operated precision instruments, you will travel with confidence. No more guessing about stone size at trade shows or on buying trips. Now you can rely on your pocket-sized gauge. Compact model, display numbers 3/16" high.

Specifications:

• Measuring range: 0-25 mm
• Resolution: 0.01 mm/0.001 inch
• Power: One Silver Oxide Battery SR44, 1.55V
• Working temperature: 0° C to 40° C
• Should be used at a relative humidity of less than 80%
• Storage temperature: -10° C to + 60° C

Features:

• Zero Setting in any position
• Metric/inch interchange
• Low battery indicator
• Gem weight estimating book
• Carrying case