Fine Guidance Sensor Plastic Model (IMAGE) NASA/Goddard Space Flight Center Caption This is a photo of a 1/6-scale plastic model of the Fine Guidance Sensor instrument. Credit Canadian Space Agency Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.