TruCheck 2D USB DPM Tower, This unit is for a wide range of codes both on print and directly marked parts. Has a field of view of 60 mm x 45 mm and the min x-dimension is 7.5mil. The unit has Webscan's unique focusing mechanisms, enabling it to verify codes in recessed or hard to get at areas. The DPM Tower can handle both 1D and 2D codes and has lighting suitable for a variety of substrates. Has lighting options of 30, 45, and 90-degree. Must purchase (Part# 4744) or (Part# 5136) calibration card with this verifier.