Anyone know what this is?

[TrumpWon]

Been in my junk pile for a while

[billy_56081]

Mole trap?

[Ranger99]

Mole trap?

Mole or gopher trap probably

[mcbammer]

  Looks like it could be some kind of depth gauge .

[Land_Owner]

It looks like part of an upside down Planimeter, though I could be wrong. 

The pin on the left side should be underneath.  Does the disk rotate (though with the nut on its left end and the rust IDK how)?  There are graduated engineering scales [0 to 120; 0 to 140; 0 to 60; I can see others] but how those are set or used IDK. 

I could use more pictures, different faces, more data on what moves and what doesn't.  It looks pretty rusty for a once "finely tuned" instrument.

A planimeter is a machine for determining area on a scaled paper drawing or map.  Civil Engineers and Surveyors used them.  In my early career I used a more modern steel one like the one below from about '83 to '87 and before Computer Aided Design, when everything went digital.

I have a plastic one I still know how to use (but don't):

[ironglow]

  It's either a thingamajig or a doohickey..

[oldandslow2]

You beat me to it. It could also be a whatchamacallit.

[Lloyd Smale]

looks like something that might be for seed planting to get proper dept with differnent seeds but im just pulling that out of my ass.

[Ranger99]

It looks like part of an upside down Planimeter, though I could be wrong. 

The pin on the left side should be underneath.  Does the disk rotate (though with the nut on its left end and the rust IDK how)?  There are graduated engineering scales [0 to 120; 0 to 140; 0 to 60; I can see others] but how those are set or used IDK. 

I could use more pictures, different faces, more data on what moves and what doesn't.  It looks pretty rusty for a once "finely tuned" instrument.

A planimeter is a machine for determining area on a scaled paper drawing or map.  Civil Engineers and Surveyors used them.  In my early career I used a more modern steel one like the one below from about '83 to '87 and before Computer Aided Design, when everything went digital.

I have a plastic one I still know how to use (but don't):

this ^ ^ ^ is probably right
just now seeing a decent picture, and it's likely some semi-precision instrument

[TrumpWon]

Picture has been on my phone for a while. Went to get it to take more pics but can’t find it.
I like the idea of a planimeter

[Mule 11]

looks like something that might be for seed planting to get proper dept with differnent seeds but im just pulling that out of my ass.

Well, I see you are honest about your source of information.

[Lloyd Smale]

Yup mule i am honest. When i dont know i say so. You should try once in a while admitting you may be wrong. 

looks like something that might be for seed planting to get proper dept with differnent seeds but im just pulling that out of my ass.

Well, I see you are honest about your source of information. Ya didn’t have to as we already knew...