Technical Specifications: - Width measurement range: 0.01 ~ 2.1mm (up to 0 ~~ 6mm) - Accuracy: better than 0.01mm - The depth of the measuring range: 10 ~ 400mm - Accuracy: 5% - Memory: 1G, can store 5000 crack picture - Data Interface: USB - Supply: a lithium battery (more than 3 hours of continuous work) - Size: host 160 × 130 × 33mm (LCD: 85 × 65mm) - Host weight: 1.2kg