Pyrometric Cones

Orton Pyrometric Cones Temperature Equivilents (°F) Orton Regular Pyrometric Cones Large Cones (2½" High) - $7.00 per box of 50 Small Cones (1¼" High) - $5.50 per box of 50 Large Self-Supporting Cones - $5.65 per box of 25 (Sold only in full boxes of one cone number)
	Large Cones		Small cones
Heating rate °F per hour (last 200° of firing)
Cone	108	270	540

022 021 020 019 018 017	N/A N/A N/A 1249 1314 1357	N/A N/A N/A 1279 1350 1402	1166 1189 1231 1333 1386 1443
016 015 014 013 012 011	1416 1450 1485 1539 1576 1603	1461 1501 1537 1578 1616 1638	1517 1549 1598 1616 1652 1679
010 09 08 07 06 05½	1648 1683 1728 1783 1823 1854	1675 1702 1749 1805 1852 1873	1686 1751 1801 1846 1873 1909
05 04 03 02 01	1886 1940 1987 2014 2043	1915 1958 2014 2048 2079	1944 2008 2068 2098 2152
1 2 3 4 5 5½ 6	2077 2088 2106 2120 2163 2194 2228	2109 2124 2134 2158 2201 2233 2266	2163 2174 2185 2208 2230 N/A 2291
7 8 9 10 11 12 13 14	2259 2277 2295 2340 2359 2379 2410 2530	2291 2316 2332 2377 2394 2415 2455 2491	2307 2372 2403 2426 2437 2471 N/A N/A