SEGER CONES. (STANDARD CONES. ABOUT 10° HIGHER.)
Numbers. Turning Points. Colour, etc.
| Centi- grade | |||||
| Commences to show colour | ╔ | .022 | 600° | ╗ | Soft enamel or over-glaze colours. |
| ║ | .021 | 650° | ║ | ||
| ╚ | .020 | 670° | ╝ | ||
| Dull red | ╔ | .019 | 690° | ╗ | Enamels on metals. Fluxes and lustres. |
| ║ | .018 | 710° | ║ | ||
| ║ | .017 | 730° | ║ | ||
| ╚ | .016 | 750° | ║ | ||
| Red to cherry | ╔ | .015 | 790° | ╝ | |
| ║ | .014 | 815° | ╗ | Very soft glazes and hard enamel colours. Some lustres. Gilding. | |
| ║ | .013 | 835° | ║ | ||
| ║ | .012 | 855° | ║ | ||
| ║ | .011 | 880° | ║ | ||
| ╚ | .010 | 900° | ╝ | ||
| Dull cherry to light cherry | ╔ | .09 | 920° | ||
| ║ | .08 | 940° | |||
| ║ | .07 | 960° | ╗ | Majolica glazes or coloured glazes and stanniferous or tin glazes. | |
| ║ | .06 | 980° | ║ | ||
| ║ | .05 | 1000° | ║ | ||
| ║ | .04 | 1020° | ║ | ||
| ║ | .03 | 1040° | ╝ | ||
| ╚ | .02 | 1060° | ╗ | Earthenware glazes. Soft China glazes. | |
| Dark orange to pale orange | ╔ | .01 | 1080° | ╝ | |
| ║ | 1 | 1100° | ╗ | Soft to hard or fine earthenware biscuit. | |
| ║ | 2 | 1120° | ║ | ||
| ║ | 3 | 1140° | ╝ | ||
| ║ | 4 | 1160° | |||
| ╚ | 5 | 1180° | Sèvres soft bisque. | ||
| Yellowish white | ╔ | 6 | 1200° | ╗ | Vitreous ware. Granite ware. Salt glaze. Stoneware. |
| ║ | 7 | 1230° | ║ | ||
| ║ | 8 | 1250° | ╝ | ||
| ╚ | 9 | 1280° | English bone porcelain or China biscuit. | ||
| White | ╔ | 10 | 1300° | ||
| ╚ | 11 | 1320° | |||
| Intense white | ╔ | 12 | 1350° | ╗ | German and Chinese porcelain. |
| ║ | 13 | 1380° | ╝ | ||
| ╚ | 14 | 1410° | Sèvres porcelain. | ||
| 15 | 1430° | ||||
| Bluish white | ╔ | 16 | 1460° | ||
| ╚ | 17 | 1480° | Copenhagen porcelain. |
To convert temperatures:
Centigrade into Fahrenheit.—Divide by 5, multiply by 9, and add 32.
Fahrenheit into Centigrade.—Subtract 32, divide by 9, and multiply by 5.