bids are invited for calibration of test equipment dry and wet thermometer minus 20 to 50 degree celcius , humidity chamber , analog stopwatch , steel scale 0 to 300 mm , steel scale 0 to 600 mm , steel scale 0 to 1000 mm , digital vernier calipers , tensile testing machine , gem zip reciprocating tester , tumble pilling tester , weighing balance top loading , electronic balance , thread counter 10 mm , thread counter 20 mm , thread counter 25 mm , dry and wet thermometer zero to 50 degree celcius , digital weighing balance upto 510 gram , digital weighing balance upto 510 gram 9a , kmi yarn strength tester , googbrand tensile strength tester , analog vernier calipers total quantity : 21