Description: 【Double Pointer Design for Real Time Pressure Comparison】: This Barometer features a unique double pointer system, with a black pointer indicating the current air pressure and an adjustable yellow comparison pointer to track pressure trends. This design aids in accurately predicting weather changes 【High Precision Measurement for Accurate Weather Forecasting】: Equipped with a highly sensitive barometer movement, it offers a measurement range of 950~1070 hPa. Its responsive nature effectively predicts various weather conditions such as rain, storms, or sunny days 【Flexible Adjustment for Local Pressure Settings】: The back adjustment screw allows manual calibration of air pressure, while the front metal knob adjusts the comparison pointer. This flexibility makes it easy to adapt to different regional settings 【Material】: Constructed with materials including aluminum alloy and ABS plastic, this barometer is both sturdy and dust resistant. Its metal frame offers a sleek and elegant look suitable for both indoor and outdoor use 【Versatile Use for Home and Outdoor Activities】: Ideal for various environments such as homes, offices, laboratories, and libraries; it's also perfect for outdoor activities like fishing, hiking, or mountain climbing where weather monitor is crucial Specification: 13cmx13cmx4.1cm/5.12inchx5.12inchx1.61inch Package Includes: 1 Barometer Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.