structural health monitoring equipment, nde, non-destructive testing, NDE, crosshole sonic logging, seismic testing equipment, foundation testing,

Olson Instruments, Inc. manufactures 3 main product lines of nondestructive testing equipment to find, characterize and assess the condition of structures — the Freedom DAS™ (a stand-alone 32- Channel Data Acquisition System), the Freedom DATA PC ™, a platform for 16 plug-in modules/accessories for ultrasonic, sonic, seismic and vibration test method solutions, and finally, the CTG™ Line of Concrete Thickness Gauges for testing concrete thickness, concrete integrity and concrete quality.