An ancient weather station, The straw filled hole in the wall extends to the outside, where it is exposed to the outside weather conditions... If the straw is warm and dry – fine weather... If the straw is moist .. presumably rainy weather ... If the straw is frozen (i.e. it is not possible to remove a single straw there are icy weather conditions.. )

Wizard of OZ the short version, 2XL

One of the first and unsuccessful attempts to build a green house...

The first plants was grass or corn, but at the window area was too small and the there are no provisions for watering ... the grass withered

Wizard of OZ the short version, 2XL

A wall shrine of the „straw people“.
The most prominent is of the straw people is the Scarecrow from the wizard of OZ.It serves to remember that filthy lucre schould not be considerd as not worth a sraw, but that you can’t make bricks without straw, and that you should clutch life as the last straw...

Wizard of OZ the short version, 2XL

Robin Hood’s Indoor archery target or butts/backstop for arrows.. As Robin was a exzellent archer he never missed his target and hence there are no holes in the wall..
Additionally, the target could be very small like a penny or so, as his usual Target (another arrow is even smaller)

Wizard of OZ the short version, 2XL

A wall shrine of the „straw people“. The most prominent is of the straw people is the Scarecrow from the wizard of OZ. Used to remember that live is straw...

Wizard of OZ the short version, 2XL

Only a rough guess:

An adjustable ventilation/maintenence hole for a house of straw for checking/removing e.g. moisture (insects or other unwanted conditions that may affect a straw building).

Wizard of OZ the short version, 2XL

Could also be a lenght adgustable french single-prong fork for eating (giant) snails roasted in the shell in garlic butter direclty form the Gastropod shell...

The length of the fork is adjustable to be adapted to differently sized shells..

Wizard of Oz, The Short Version 2X

It seems to be a instructing device that help young vulcanians in learning the right hand position for administring the "vulcan nerve pinch" as well as the "Vulcan mind meld", as known from commander Spock in Startreck..

live long an prosper...

Wizard of Oz, The Short Version 2X

Reply to ladybuggs...

I think the size of the device is to small to "measure desired sleeve length",

However it seems possible that the device is useful to measure a distance value between shoulder and armpit required to determine the size of a sleeve opening / arm holes of a vest...

But this is only a rough guess and without the initial idea of ladybuggs iwouldn't have considered such a solution..

Wizard of Oz, The Short Version 2XL

It seems to be sliding gauge/measure to be used in (the pseudo-science) Phrenology.

Wizard of Oz, The Short Version 2X

IIt seems to be sliding gauge/measure to be used in (the pseudo-science) Phrenology.

Wizard of Oz, The Short Version 2X

It is a hight adjustable necktie "cloth" hanger, for a single necktie.

Wizard of Oz, The Short Version 2XL

I am not sure, however it may be some kind of slidign gauge, for measureing a person's shoe size

Wizard of Oz, The Short Version 2XL