Well, the half round thumb thing is a fake wheel - it can't rotate. Millimeters are easy to read, inches are less easy. The knurled knob to hold a reading works. The marks are engraved and accurate - the vernier reading scales came adjusted correctly. The jaw faces meet neatly with no light showing through. The only moving parts are the slide and the set screw. The fake fine adjustment wheel is also on the $85 Starrett https://www.amazon.com/Starrett-125MEA-6-150-Stainless-Resolution/dp/B000VDZEAC/ref=sr_1_1?ie=UTF8&qid=1541450139&sr=8-1 which is a "nicer" (also made in China) vernier caliper.
Laser rangefinder Xiaomi ATuMan Duka LS-P Laser Range Finder 40 m gray
119 Review
Cullaby Contour Gauge: 10 & 5 Inch Duplications For Perfect Templates Of Curved And Odd Shapes, Plus Bonus Angle Ruler & Carpenter Pen!
23 Review
Laser level Zitrek LL1V1H
36 Review
Accurately Measure Angles And Levels With GemRed XVB Digital Gauge Level Box For Pipe Conduit
25 Review
Digital multimeter RGK DM-12
6 Review
🔧 UEi Test Instruments DAFM3B Digital Multimeter
6 Review
🔍 Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
🌬️ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review