Features: Seven button digital micrometer with satin chrome thimble and sleeve with hardened and tempered, satin finish stainless steel digital vernier caliper. Large, easy-to-read LCD read-outs. Displays switchable between Metric and Imperial units. Zero display at any point allows comparative measurement. Both instruments include serial port for connection to computer. Supplied in storage case with micrometer adjustment wrench. Specifications: Model No: AK9637D Content Specification: Micrometer: Range: 0-25mm(0-1") Graduation: 0.001mm(005") Accuracy: �0.001mm(005") Battery: 1 x LR44 (supplied) Caliper: Range: 0-150mm(0-6") Resolution: 0.01mm(05") Accuracy <100mm: �0.02mm(0.001") Accuracy 100-150mm: �0.03mm(0.001") Battery: 1 x LR44 (supplied) Height: 40 Width: 282 Length: 152