... poor reliability and non-waterproof. The latest design of IP67 digital caliper with absolute encoding system is made of ... is required. Otherwise there will be calculation errors.Our IP67 digital caliper adopts 2 encoding or more encoding. But ... higher reliability. 2.Waterproof, oilproof, anti-electromagnetic interference, protection Level IP67 (CEI 60529) 3.One-button design, menu prompt, simple, ...