Straight probe (hard protective film), straight probe (soft protective film), angle probe, double wafer angle probe, surface wave probe, echo probe, double wafer straight probe, medical use probe, small angle probe, small diameter tube probe, plate wave probe, creeping wave probe, sheet probe, adjustable angle probe, rail probe, axle probe, piston probe, macle plain journal probe, brake shoe probe, dipping probe, filling water probe, macle filling water probe, liquid crystal focus probe, connecting focus probe, connecting focus angle probe, general thickness measuring probe, small diameter tube thickness measuring probe, moderate temperature thickness measuring probe, high temperature thickness measuring probe, deep water probe, air probe