Front Door Side Door Old Door Bell Buzzer Plate with Turning Arrows demitasse cups but I can't find another

but I can't find another anywhere with this one)

Then some blank pages and THEN this amazing section of physics notes

with a beautiful intimacy and ethereal quality

I'm not sure which side of this I like better

Front Door Side Door Old Door Bell Buzzer Plate with Turning Arrows demitasse cups but I can't find anotherI found this one yesterday in New Hampshire and just thought it an interesting and evocative object, with arrows that can be positioned to point straight up or due west. I've done a bit of searching but can't find another like it I assume it would have been positioned on a wall inside an office building or hotel (or somewhere large enough to have three front and three side doors), with arrows turning to indicate when a particular doorbell was being