Nagman instruments & electronics [p] manufactures microcal pzero, p100 and p120 models digital pressure indicators/calibrators. The digital pressure indicators or calibrators are available with salient features like 3 models with ranges from vacuum to 1000 bar; ma and v input; pneumatic and hydraulic matching hand held pumps; rs-232 interface and software; pneumatic microcal pzero-range vacuum to 20 bar, 0.05% accuracy; two rows display; 18 selectable pressure units; internal data memory; mmcrocal p120-range upto 1000 bar vacuum [external sensors up to 700 bar], 0.05% and 0.025% accuracy, two row 6 ½ digit display; internal data memory; 11 selectable pressure units; microcal p100-range 0 up to 1000 bar, 0.05% accuracy, 5 selectable pressure units; and intrinsically safe model.