Description <br> Description: <br> Indoor Outdoor Barometer: Weather station barometer measures barometric pressure (hPa) (mbar). Precision clock movement and measurement help you judge weather change. <br> No Battery Needed: This Mechanical barometer built in sensor, will automatically sense and accurately measure, you do not need to calibrate, no battery need. <br> Exquisite Workmanship: 3.54inch round clear cover and alloy housing, EU standard analog mechanical, adapt to four seasons and climate. <br> Easily to Read and Hanging: Large and clear dial reading easier, and there is a hole on the back for hanging it on the wall. <br> Application: Hanging pressure gauge weather station suitable for greenhouse, warehouse, office, wine cabinet, garden, patio, home etc. <br> Specification: <br> Material: Alloy <br> Size Chart: <br> Diameter:90mm/3.54inch <br> Package Includes: <br> 1 Piece Dial Type Barometer <br> Note: <br> Please allow slight dimension difference due to different manual measurement. <br>