Gillmore needle is used for_______________?
(A) Testing the strength of plaster of paris
(B) Evaluating the setting time of plaster of pris
(C) Testing the metal hardness
(D) Testing the purity of noble metals
Gillmore needle is used for_______________?
(A) Testing the strength of plaster of paris
(B) Evaluating the setting time of plaster of pris
(C) Testing the metal hardness
(D) Testing the purity of noble metals
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