"DoN. Nichols" wrote: ...
429) I presume that there are also partitions between the cavities
> exposed by twisting the head.
>
> I think that this is for sampling something, grain perhaps, at
> various depths in a pile. You close the ports, shove it it,
> rotate it to open and allow in samples, rotate it again to
> close, and withdraw.
>
> There is probably a setup with equally-spaced containers to
> receive all samples at the same time, prior to examination by
> whatever means -- microscope, bare eyes, moisture tester, > whatever.
You got's it...grain sampler (or other dry material also possible). W/ grain samples anyway, the sub-samples are mixed before weight/moisture testing.