Sherline 17" Table Top Lathe - Package C - Metric - With DRO*Pre order item lead time 4 6 weeks* Beginning August 1st, 2021, all DROs will ship with an upgraded chip. This new chip upgrade allows our Digital Readout to function with our ball screw machines as well as our standard leadscrew machines. We also programmed some upgrades based on customer feedback, like using Metric on Inch machines and using Inch on Metric machines. The new DRO chip has six different modes to choose from based on the machine type,