Underground Survey Meter

[Klaud]

Hello,
Looking at the schematic of the above subject, iI noticed a part call I1 GE-53
Who can tell me that is this part ?
I am living in Greece and I will have to find something similar.
Thanks for your answer.
I want also to say that site (GeoTech) is WONDERFUL !
Stay on this way !
Klaud

[Carl-NC]

It's a light bulb, used to limit the short-circuit current in case you accidentally touch the probes together.

- Carl

[Elie]

GE-53
14.4V .12A