
Several of you have posted photos of your dolls house furniture in different scales. When I was putting together my dolls house study and the Super City mini-building, it occurred to me that it would be fun to stand pieces in different scales on top of each other.
These kitchen tables can also nest:

and by placing them next to each other and looking from above, you can see that the long end of the smaller table equals the short end of the bigger table!

The largest table is 1/10th scale, and is vintage German (from Oese). The next one is 1/12th scale, and is also vintage German - it came in my VERO Rügen, and I think it's Crailsheimer. The pale green soft plastic table is 1/16th - 1/18th - it says 'Made in England', and I think it's Kleeware. The next table is marked Kleeware - it's 1/24th scale, and hard plastic. Then there's a tiny 1/48th scale cream coloured plastic table, which I think is by the Ohio Art Company (or a copy of their furniture) - and the tiniest is 1/144 scale, from the Sylvanian Toys dolls house for their dolls house.
UPDATE: Oese wondered on flickr if the scale of the pink table might be 1/10th, and the wooden table larger still. It's a very sensible question - it's clear that the tables are different sizes, but as I didn't measure them or include a ruler in the photos, the actual size, and hence the scales, was not obvious. So, I've now measured them, and here are their actual dimensions and the dimensions they would be in 1:1 scale. (Only in metric so far - I have measured them in inches too, but multiplying inches is a bit more complicated, so one thing at a time!)
The wooden table is 15.4 cm long x 10.2 cm wide x 8.5 cm high.
In 1:10 scale, this makes it 1.54 m x 1.02 m x 85cm.
The pink table is 11 cm long x 8.3 cm wide x 6.7 cm high.
In 1:10 scale, that would be 1.1 m x 83 cm x 67 cm,
and in 1:12 scale, it would be 1.32 m x 99.6 cm x 80.4 cm.
The pale green table is 8.85 cm long x 5.8 cm wide x 4.7 cm high.
In 1:16 scale, that would be 1.41m x 92.8cm x 75.2 cm,
and in 1:18 scale, it would be 1.59m x 1.04m x 84.6 cm.
The white table is 5 cm long x 3.1 cm wide x 2.8 cm high.
In 1:24 scale, that would be 1.2m x 74.4 cm x 67.2 cm,
and in 1:30 scale, it would be 1.5m x 93 cm x 84 cm.
(I don't actually know if 1:30 scale exists for dolls house furniture, but I wanted to see what it would be in a smaller scale than 1:24.)
I don't actually have a real-life rectangular kitchen table, just a small round dining table and the built-in kitchen work benches. So I can't measure a 1:1 scale table! What do you think? I think I'd be happy with the wooden table in 1/10th scale and the pink one in 1/12th - but the pink one certainly could be 1/10th. Perhaps the wooden one could be 1/8th (1.23 m long x 81.6 cm wide x 68 cm high), but again, I'm not sure if there are many 1/8th scale dolls.
I'm not very strict about scale in my own dolls houses, and especially with vintage furniture from many different makers and old dolls houses, I tend to do what I do with clothes - try it and see if it fits, within a scale up or down. But that means knowing roughly what will be a good fit - so knowing about scales does have some use!