The Ohaus Trooper is a practical and rugged counting scale with weighing facility (4 units), parts counting with auto-optimisation and auto-add, check-counting, positive and negative sampling and counting. The Trooper has an ABS plastic housing with stainless steel pan size (all models) being a generous 340 x 230mm. Powered by AC adaptor (supplied) or 6 C batteries. Features include auto zero tracking, memory for tare, ID, average piece weight, 60 item memory with accumulation, manual or preset tare, programmable over/under limits with audible beep and display indication. The display is a 3 window backlit LCD display and the Trooper also has a configurable RS232 interface. Choose from the following Capacity (readability):- 3kg (0.5g), 6kg (1g), 15kg (2g) or 30kg (5g). Recommended minimum average piece weight - 0.06 x readability.