Calipers assist with measuring metals. They can be locked in place at a certain measurement (in inches or in millimeters). The top metal jaws assist with measuring the inside of items, like rings. The bottom jaws measure the outside of items.
Amazon and Rio Grande both offer well-made calipers on their websites. Digital calipers with an LCD screen are especially helpful and recommended.
About the author Megan Coward, Graduate Jeweler Gemologist, GIA, Graduate Gemologist
Megan Coward is a graduate of the GIA with Graduate Jeweler Gemologist and Graduate Gemologist accreditations. She has 20+ years in the retail jewelry industry in various roles including as a diamond buyer and gemstone appraiser.
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