6Inch 150mm Double Scale Plastic Vernier Caliper for Jewelry Sliding Gauge Ruler Measuring Tool. 
 
✔Precision measuring instrument for delicate items - essential tool for jewelers
✔Precision sliding gague measures up to 6" (150mm) in increments of 1/16" (1mm)
✔Scale marked in Centimeter,Vernier Design will measure inside and outside of object
✔Use for Permanent Makeup Tattoo Eyebrow Line Lip or science projects
✔Length: 20.9 cm / 8.23" (Approx.),Width:7.2 cm / 2.83" (Approx.)
 
Excellent tool for crafters, jewellers and many more.  Easy to clean, accurate for most jobs.  I use these for measuring finished products before adding them to my website.  The plastic is much better than metal versions as it doesn't scratch or damage the finished surface.  Ideal for small pieces like the pictures above.
 
Very handy tool to have in your office or workshop!  Sold with a plastic sleeve ptotector.