E1C3H4O1G2R1A1P3H4S1
21 points
ECHOGRAPHS is validvalid
ECHOGRAPH, a device for measuring things using sound waves [n]
ECHOGRAPH, an echo-sounder, used to measure the depth of water [n]
ECHOGRAPH, a device for measuring things using sound waves [n]
ECHOGRAPH, an echo-sounder, used to measure the depth of water [n]