Large Pyrometric Cones #9 (50 box) - Orton Footing Tools The RT4 8cm size is

The RT4 8cm size is for smaller pieces and clasping narrow necks

This one bites

good coverage and sharp contours

Has potent anti-bacterial and anti-viral properties

1251°C 60°C/hr (Medium)

Large Pyrometric Cones #9 (50 box) - Orton Footing Tools The RT4 8cm size isOrton Large Pyrometric Cones #9 Box of 50 units Heating Rate Temperature Equivalence 60C hr (Medium) 1257C 150C hr (Fast) 1278C Explanation: Medium: The melting point of the cone at a slow rate of temperature change of 60C per hour, will be 1257C. Fast: The melting point of the cone at a fast rate of temperature change of 150C per hour, will be 1278C. General Information: Large Pyrometric Cones allow users a practical method to monitor the heatwork