Igaging® digital caliper with fastener reading function features ul style 'margin-top 0px; padding-top 5px; padding-bottom 5px;' ip54 water and dust resistant range 0-12"/0-200mm. Resolution 0.0005"/0.01mm/128th/32nd. Accuracy 0.0015" exclusive function reads in standard bolts and nuts size in both english and metric units max measuring speed 3 m/sec (super fast) hardened staineless steel slide and frame super large easy to read lcd display battery cr2032 (1) supplied with fitted case