It is an Altimeter which is possible to carry easily due to Compact and Handy type and to convert an Atmospheric Pressure to Altimate. Measuring range from 0 to 5,000 meter. "Altimeter" means a Device to measure Altitude and it is mainly used at Climbing or Airplane. It is devided to "Atmospheric Pressure Altimeter" and "Radio wave Altimeter". We adopt "Atmosphetic Pressure Altimeter" which is essential tool for Hiking, Climbing, Skydiving to know the change of Altitude or Atmosheric Pressure.