Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by process]
7. [cooling, heating and humidifying equipment]
8. heating equipment

Anotations

Scope note:

Gradient-heated devices used to determine the melting point of a substance designed by Ludwig Kofler, usually to be used with a microscope. These feature stainless steel surfaces which are electrically heated at one end, resulting in an approximately linear temperature gradient along the top surface.