Tool name

[WTXTundra]

Came across another tool that I have no it’s function. I’ll take some help.

 

[Steve W.]

Tool name?

Looks like a "George" to me.

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[Loud Lyle]

Is it an oiler ?

 

[TurnipTruck]

That looks like a neon spark plug wire tester thingamabob. Any lettering on it?

 

[WTXTundra]

The metro end isn’t magnetic and it has a sight glass that’s has some brown liquid in it. No markings on the pen but it has “BG” on the leather case.

 

[carlaisle]

If you grasp the blue part and pull on the drawer pull looking end what happens?

 

[Lassen Forge]

It looks like an oiler, a cased spirit level, or a thermometer of some kind...

 

[Skyman]

That looks like a neon spark plug wire tester thingamabob. Any lettering on it?

I'm pretty sure this it what it is. Lay its tip alongside of a plug wire on a running engine, and see if strobe is visible in that window slot.