MFORALL Inch and Millimeter Conversion Measuring Digital Vernier Caliper with Large LCD Screen, Auto-off Feature for Household/DIY Measurement Inch and Millimeter Conversion Measuring Digital Vernier Caliper with Large LCD Screen, Auto-off Feature for Household/DIY Measurement (0-6 inches) Digital Caliper  (150 mm)

The mini pocket size vernier micrometer is widely used for measuring of industrial accessories, handicraft, pearls and jewels. It can measure inside, outside, depth and step size with two sets of jaws and the probe. I believe that will be a good idea, if you could give your children a handmade necklace as birthday gift, which is made of pearls in oysters. The micrometer caliper will help you a lot, it is a good partner of pearl drill. Specifications: 1. Weight: 70g 2. Display: LCD Screen 3. Color: Silver+Black 4. Power: One Battery (included), LR44/AG13 1.5V 5. Measuring Range: 0-100 mm / 0-4 inch 6. Resolution: 0.1 mm / 0.01 inch, Packing Content: 1 x 1.5V Button Cell, 1 x Electronic Digital Caliper, 1 x Hard Storage Case