Absolute Quantum Gravimeter
![Color photograph of instrument](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/Picture1_4.jpg?itok=dfI6Uw_m)
Detailed Description
The USGS Hawaiian Volcano Observatory’s Absolute Quantum Gravimeter is undergoing set-up, testing, and calibration before installation at the summit of Kīlauea. USGS image by A. Ellis.
Sources/Usage
Public Domain.