Make your own digital caliper DRO using a 3$ set of digital vernier calipers. Add extra displays, USB output, and anything else we can dream up on Arduinos.
Digital Calipers DRO
OUTAD 0-100mm Digital Vernier Caliper Electronic Digital LCD Vernier Caliper Tool Ruler Measuring Tool Gauge Caliber Vernier
Reading Digital Callipers With an Arduino / USB : 4 Steps - Instructables
High Accuracy Digital Caliper: DITRON large screen digital calipers. Measuring Range: 0-6/150mm, Resolution: 0.0005/0.01mm, Accuracy
DITRON Digital Caliper, Vernier Caliper Measuring Tool, Stainless Steel Electronic Digital Calipers, IP54 Waterproof, Large LCD Screen, 6 inch/ 150mm
Caliper to PC Interface Packages – Tagged – GreatGages
Digital Caliper DIY - Make Your OWN Machining DRO, USB, or Keyboard-on-Click Vernier Calipers
VINCA DTCR-03 RS232 Digital Caliper Data Transfer Cable: : Industrial & Scientific
DITRON Digital Caliper, Vernier Caliper Measuring Tool, Stainless Steel Electronic Digital Calipers, IP54 Waterproof, Large LCD Screen, 6 inch/ 150mm, Auto - Off Feature, Inch/mm Conversion: : Industrial & Scientific
0-150mm digital vernier caliper with RS232 (9holes) output datalink +software+ USB adapter can connect to computer - AliExpress
VINCA DTCR-03 RS232 Digital Caliper Data Transfer Cable: : Industrial & Scientific
DITRON Digital Caliper, Vernier Caliper Measuring Tool, Stainless Steel Electronic Digital Calipers, IP54 Waterproof, Large LCD Screen, 6 inch/ 150mm, Auto - Off Feature, Inch/mm Conversion: : Industrial & Scientific
Caliper to PC Interface Packages – Tagged – GreatGages