PHYSICAL TESTING MACHINES-NAMELY, BRINELL HARDNESS; RUBBER HARDNESS; UNIVERSAL-HYDRAULIC, MACHINES FOR TESTING IN TENSION, COMPRESSION AND FLEXURE ON ANY PHYSICAL MATERIAL, THE WEIGHING BEING ACHIEVED BY PRESSURE DEVELOPED IN A HYDRAULIC CYLINDER; UNIVERSAL-ELECTRO-MECHANICAL, MACHINES FOR TESTING IN TENSION, COMPRESSION AND FLEXURE ANY PHYSICAL MATERIAL, THE WEIGHING BEING ACHIEVED BY A TORQUE-BAR WEIGHING UNIT; TENSION; COMPRESSION; TRANSVERSE; FLEXURE; PROVING RING; CAPPER, DEVICES FOR LEVELLING THE ENDS OF CONCRETE CYLINDRICAL SPECIMENS TO INSURE PARALLELISM OF TOP AND BOTTOM SURFACES FOR THE PURPOSE OF MAKING COMPRESSION TESTS; ABRASION; FOLDING ENDURANCE PAPER; WEAROMETER; TORSION; CEMENT; STIFFNESS; FLOW; PLASTOMETER; PARALLEL PLATE; DISTORTION; BRITTLENESS; CREEP; DILATOMETER; DUCTILITY; TORSION; STIFFNESS; LOAD DEFORMATION; EXTENSOMETERS; ELECTRONIC RECORDER, DEVICES WHICH AUTOGRAPHICALLY PLOT STRESS-STRAIN CURVES IN CONJUNCTION WITH PHYSICAL TESTING MACHINES, AND MACHINES FOR TESTING IN TENSION, COMPRESSION AND FLEXURE ESPECIALLY DESIGNED FOR PLASTIC MATERIALS, AND BALANCING MACHINES-NAMELY, STATIC-DYNAMIC; AUTOMATIC CRANKSHAFT; HORIZONTAL AND VERTICAL