[deks]

Hey, GW. I took up your request to investigate the window sashes

As to the montage in your post #1495, the Biden photo is cropped and the photo is way too blurry to define the window structure. And the camera angle is slightly left of center of the window behind Biden affecting the line up of the grids (see explanation below)

For reference see the © AP photos in the following article (right click and open in new tab)

https://www.thedenverchannel.com/news/national-politics/see-what-changes-president-joe-biden-has-made-to-the-oval-office

[see at far left of 3rd photo at link] I noticed something interesting. Completely covering, and on the inside of the lower wooden sash of the oval office windows there is a separate white metal frame that holds a single large and thick pane of bullet-proof glass (that's why the white wood of the lower sashes appears slightly darker with a bit of a greenish tint in the photo)

The thick horizontal center line between the upper and lower sashes is not the wooden frame. It's the top bar of the white metal frame inside the lower sash.

As to INNER or OUTER sashes -- For old style double-hung wooden windows, the wood pieces (muntins) form a grid and hold each individual pane of glass in place. The bottom sash (lower section of window) typically slides up to open and is to the inside of the upper sash.

[see 2nd photo at article] The wall behind the oval office desk is curved and has three windows. For a camera centered in front of the desk, the grids of upper and lower sashes will line up only for the center window.

The left and right windows are at different angles to the camera, and so for the left window the grid of the upper (outer) sash will appear slightly to the left.

For the right window the grid of the upper (outer) sash will appear slightly to the right, as in the photo of Biden's redecorated office at the linked article [2nd photo, zoom in]

𝖉

[grey_whiskers]

You're blowing smoke, nice try.

Look at the pthoto at top right of what I supplied.

There is a horizontal bar emerging from behind Biden's cheek and going to the user's right.

This is the frame of the UPPER sash.

You can tell, because at the extreme right of the picture, it is contiguous with the portion of the sash going *up*.

Compare it to the window to the right hand side of the 0moeba picture. Same horizontal line, same dark strip across it, but there is a slight difference in color distinguishing it from the upper sash, that's how we know 0moeba's horizontal line is the lower sash.

Look at the window behind President Trump. Same dark line underneath the horizontal bar, but you can see the inner face of it (think of the inner rim of a picture frame) clearly contiguous with the lower window frame going down; and a clear change in color between the vertical sash at the right going above this frame, and the vertical part of the lower window frame going down.

Oh, and check this out.

Remember what you said about

For the right window the grid of the upper (outer) sash will appear slightly to the right,

Look at your pic again.

You're WRONG. Look at the middle window in that picture, and even more, the window to the far left of that picture.

Clearly the upper window there is the outer. And those sashes appear to the left, not the right.

I do believe you typed carelessly, or your assertion is muddled.

The way to tell upper from lower, is whose vertical sashes are physically contiguous with the cross bar. This is true across ALL pictures.

[xander]

Both sashes slide up and down. Notice the weights, rope, and pulleys to counter the weight of each sash.

The photo in questions is showing the upper sash, as the drawing illustrates, is now down and the lower sash is now up. That mostly explains what is different. Not impossible, just different.