Well, the cheapest place I found was Seattle Marine & Fishing Supply Company seamar.com Finding the info on their web site isn't the easiest - to see the pictures you have to download the hardware catalog from: www.seamar.com/pdf/
They have three different types, and left & right varieties of each: Seadog Take-Apart Hinge (brass) (cheapest, around US$5 each) left - SDG204278 right - SDG204279
Seadog Take-Apart Hinge (stainless steel) (~US$7) left - SDG205270 right - SDG205275
Perko Pull Apart Hinge (chrome plated bronze) (~US$40) left - PRK149DP right - PRK152DP
you can punch in the codes and find their actual prices.
Well, while I'm at it, I was looking at the interrior pictures, and am guessing that the catch at the top of the window:
Is something like this
... a cupboard catch from (you guessed it) a marine catalog (www.seamar.com again). There are lots of different styles of cupboard catches out there, but since none of the pictures I've seen are anywhere near clear about this detail, I just picked one.
Can't remember if I've posted this one of the hinge on the Crich box before or not, so better safe than sorry ;D I've found some clearer (sort of) pictures of the window catches. This one had been taken off one of the windows (not by me!) so thought a photo shoot was needed
I'm not sure what you meant by angled cuts on the hinges, but the telephone door at Crich is certainly kept shut with the sprung ball catch the Ironage mentioned. The difference being that the ball catch is located on the box rather than on the actual door. I'm of the opinion (think I saw it somewhere, might have been at Tram museum) that the phone panel on the "Mini TARDIS" had self closing door mechanisms as well as the catch things, like fire doors have.
The top one would be a normal type of hinge. The bottom one has the barrel part of the hinge cut at an angle, so that when the hinge turns it also lifts the top part up a bit. As long as gravity's working, the hinge will want to go down, and thus closed. I've seen these before, but can't think where (and couldn't figure out what they're called, as I'm sure there is a proper name for them).
It really does look to me like there is a slight angle on the phone window hinge.
You mean "rising butt hinges" - often used on doors in houses to protect the carpets. They also self-close by gravity (when it's working...). I don't think there are any in my house, but a quick look on google with that phrase found some examples. Now that you come to mention it, I'm wondering if I should retrofit some to my TARDIS doors, as people are always leaving them open... What was that quote? "Close the door or there'll be a draft".
I personally think that If I'd been trying to use a police post (complete with auto-closey-thing) I'd get pretty p'ed off with the door keep shutting, so maybe the got 'accidentally' broken by miffed bobbies?
Sorry Sorvan, I get what you mean now!
I don't think they were originally meant to be angled butt-hinge types. I think it's just a case of the hinges being old with a combination of my bad photography and over-painting!
Also, the door at Crich opens an closes quite freely, but only with physical help. If left it just stays open (Have you altered the gravity settings Scarfy?). When I next go down, I'll have a closer look at these hinges and report back.