Fluke 2700G reference gauges support comparison testing of pressure gauges, transmitters and switches. Bidirectional BG versions measure vacuum and positive pressure; G20M/G35M/G70M versions measure positive pressure. The nine ranges are separate orderable models, not one gauge covering the entire family. Uncertainty is ±0.02% FS for positive pressure and ±0.05% FS for vacuum under the specified temperature and model conditions. Min/Max, tare, damping and selectable units support calibration work. A suitable pressure source or P5500 comparator is selected separately. Permitted media also depend on the selected range.