Apparatus for testing materials, namely, apparatus particularly for the verification, recording and analysis of the resistance of a sonde to penetration as well as the resistance of a drilling sonde in particular, used with trees, wood, and wooden materials included in this class

INSTRUMENTS FOR MEASURING AND RECORDING THE HEALTH CHARACTERISTICS OF TREES, WOOD, AND WOODEN ITEMS COMPOSED PRIMARILY OF OSCILLOSCOPES OR OTHER RESISTANCE-MEASURING AND RECORDING DEVICES, SPECIALLY-SHAPED NEEDLE AND A DRILL

RHEOLOGICAL INSTRUMENTS FOR MEASURING AND RECORDING THE QUALITY CHARACTERISTICS OF GRAIN AND THEIR FLOURS, ESPECIALLY OF WHEAT AND WHEAT FLOUR