ESA JS3 Total Energy Probe 8mm-40mm RU/ST [TO1019]
The measuring head on this probe has two precisely defined slits for a very clean TE signal.
Older versions had one or two holes instead. Due to the construction the measuring head can be easily changed.
This probe should be aligned with the head oriented upwards.
The end piece on this probe is compatible with ST1 adapters only.

Cantilever: 290 mm
Total length: 330 mm
Weight: 25 gr
Material: Carbon Fibre
Aluminium anodized
End piece: ST1 8/40 mm
Socket (Adapter):ST1
Pickup: TE