The State Scientific Institution “Institute of Applied Physics of the NAS of Belarus” has developed a series of small-sized multifunctional devices for non-destructive testing (namely for control of properties and defects of the material without destroying the product) of various materials, such as metals and alloys, polymers, rubbers, building materials (concretes, asphalts, bitumens), and carbon composites. The devices have been designed for accurate and rapid measurements of physical and mechanical properties of materials (such as hardness, yield strength, firmness, elastic modulus, etc.) in laboratory, production or field conditions without destroying or damaging products. Physical and mechanical indicators are very important in engineering practice, because they determine the quality of manufacturing products, as well as the possibility of further exploitation of potentially hazardous equipment, for example, oil and gas pipelines, critical elements of complex technological equipment.