Standard test block | 4A thickness step test block Standard thickness block | GHF test block 4 | GZ test block 5 | Semi circular test block SH-16 | Simulated test block H-30 | Simulated test block H-50 | Simulated test block H-807 | Sensitivity test block CS-1 | Sensitivity test block A1 | Sensitivity test block A2 | Comparison test block DZ-1 | Blind zone test block | Micro blind zone test block STM-1, STM-2 | Horizontal linear test block 1-3 # | Resolution test block | Ray step test block | Lifting force test block | A-type portable phased array test block | B-type portable phased array test block