The patented UniBloc (OPF) sensor achieves high-performance, compact size, and durability at the same time. Shimadzu introduced this wire-cut block sensor to high-precision platform balances in 1989. The combination of low-profiled body and large pan provides operator comfort during bulk weighing. The WindowsDirect function helps the balance communicate directly to a PC with Windows® applications. No additional software is needed to interface with spreadsheet, database, word processing, and laboratory software. It works Windows® 95, 98, 2000, NT4.0, Me and XP. The PC must be IBM PC/AT compatible. The simple structure and overload protection mechanism results in maximum durability. There is a guaranteed sensitivity which means internal resolution is one digit finer level than display, so even minimum readout is highly reliable and stable. Selectable weighing modes include selecting the best measurement modes depending on the purpose and environment with ease. The BW-K Series is equipped with built-in calibration weight. Operator is released from weight maintenance. A single lever operation is all that is needed to load the weight for calibration.