... is used to test the softening point of pitch.FeaturesThe instrument is composed by bracket, which is made ... locater, standard steel ball, flask and thermometer.The instrument is reasonable in structure, beautiful in shape and ... ball to fall freely in the middle of the test cup through the gap over ... over 140mm.6. Thermometer: Suitable to the standard of GB514-83, complete immersion, bar type, 30~180 ...