
I use these calipers to measure the diameter of watch crystals. The size is perfect, I don't like the 6 inch calipers, they are too big and bulky.

Cullaby Contour Gauge: 10 & 5 Inch Duplications For Perfect Templates Of Curved And Odd Shapes, Plus Bonus Angle Ruler & Carpenter Pen!
23 Review

Laser pointer Green Laser 303
31 Review

Thickness gauge CarSys DPM-816 PRO (Fe/nFe)
31 Review

Laser rangefinder Xiaomi ATuMan Duka LS-P Laser Range Finder 40 m gray
119 Review