G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
G01M1/00—Testing static or dynamic balance of machines or structures
G01M1/30—Compensating imbalance
G01M1/36—Compensating imbalance by adjusting position of masses built-in the body to be tested
G01M1/365—Compensating imbalance by adjusting position of masses built-in the body to be tested using balancing liquid
B—PERFORMING OPERATIONS; TRANSPORTING
B24—GRINDING; POLISHING
B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
B24B41/00—Component parts such as frames, beds, carriages, headstocks
B24B41/04—Headstocks; Working-spindles; Features relating thereto