Pyrometric cones bend at specific temperatures, acting as a visual gauge for kiln heat. This ensures accurate monitoring of the firing stages without directly affecting the clay or glaze.
| LIST I | LIST II | ||
|---|---|---|---|
| A | Cones | I | White |
| B | Green ware | II | Blue |
| C | Cobalt Oxide | III | Bend under heat |
| D | Porcelain | IV | Bisque-fired |
| LIST I | LIST II | ||
|---|---|---|---|
| A | Bisque firing | I | Second firing |
| B | Glaze | II | First firing |
| C | Pyrometric cones | III | Temperature measuring |
| D | Pyrometer | IV | Pyramid shape |
Match List-I with List-II 

