Adam Dune DCT [DCT 2000] Portable Compact Balance With External Calibration, 2000g x 1g. The Adam Equipment DCT 2000 2000g Dune Digital LCD Compact Balance offers all the necessary features for quick and easy weighing, including simple three-button operation and portability. The balance is equipped with an AC adapter, automatic calibration through the keypad, a low-battery indicator and overload indicator. Precision readings are delivered on a large display, so results are easy to read. With its battery operation (batteries not included), splash-proof keypad, and streamlined design, the Dune delivers accurate readings in the classroom, lab or in the field.