This picture shows a rack of hydrothermal furnaces and support equipment (temperature controllers, digital thermometers, haskel pump, heise pressure gauge, etc.).
Kanthal doubly wound tube furnaces (8)
Main windings run the length of the core and controlled by the temperature controller, whereas the secondary windings, covering the front half of the core, are variable pitched, wound and controlled by an external variable transformer.
Temperature Controllers and Meters
CN77000 1/16 DIN Micromega Autotune PID temperature controllers (8)
SSRL240 Solid State Relays (8)
Compact 3/64 DIN temperature Meter with full size LED (3)