国产自慰在线资源|国产精品亚洲中文欧美|亚洲欧美日韩精品专区|在线免费国产视频一区二区|免费一级A级高清毛片人妻|亚洲欧美在线制服丝袜国产|伊人久久大杳蕉夜夜揉夜夜爽|最新哺乳亚洲AV日韩AV二区

The PS-1 NEO is a palm-sized digital instrument for elastic wave velocity measurements. A wave created by hitting ground with a hammer is detected in a distantly-positioned receiver (geophone), and this instrument measures the ground propagation time of the wave from the hitting point to the receiver.

Elastic wave velocity can be easily calculated by the propagation time and distance between the hitting point and the receiver.

Feature

• Elastic wave velocity can be easily obtained

• Compact design and easy to carry around

• Equipped with simple digital display

• Powered by four (4) size AA cell batteries