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The Rani's Console Room Set

Started by oslm, Oct 25, 2016, 09:14 am

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Hi Tony,

This is the image I have been using mostly to do my calculations with and to get the panel details from --


while it doesn't show all of the base of the console it does help with the upper half -- I know some of my numbers are a little off
but I would be interested to see what you can come up with --




As for proportions of the various diameters, chew on this photo a little.
pixels: red 2005, cyan 1984, green 897

If the column is 60, the outer panels (including belt) would be 134, which is, well, too wee. 70 and 156 is closer to what I originally suggested. The studio plans suggest the hanging diffuser is 300, and the podium is (maybe) 8 metric feet.


tony farrell

Feb 08, 2017, 03:36 am #17 Last Edit: Feb 08, 2017, 03:37 am by Tony Farrell
This black & white photo is obviously much clearer than the screen-grab. Thank you.

I can work out the proportions/ratios from this but would need a starting dimension from which to extrapolate the 'missing' dimensions.

The dimensions I suggested in my previous post were based on 'dead-reckoning' from a podium height of 150 mm. Clearly if the 150 mm is an under-estimate, then all dimensions calculated from that figure would be too small.

Would you care to post the studio plans so we can have a look?



The crudeness of the low res is preventing a true measure of the height of the belt for sure. The plans state 150 mm for the podium, but I'm pretty sure the belt is also 150 mm. Again a low res screen cap, but it appears to be the same here.


tony farrell

Feb 08, 2017, 12:45 pm #20 Last Edit: Feb 08, 2017, 01:32 pm by Tony Farrell
Firstly can I thank Oslm and Gene for the HD photo and the set plan:

What an absolute joy it is to work from something which gives you so much detail and a starting dimension. How I wish that such things exist for the Newbery Tardis interior - having anywhere near this amount of reference material would have saved me weeks of hard work and eye strain!  :)

From the set plan, we can indeed see that the circular podium has a diameter of eight metric feet:

rani_tardis2 cropped.jpg

(We can be confident that the dimension specified is stated in metric feet (rather than imperial) for two reasons: Firstly, BBC Television Centre was designed and built using metric feet and therefore fixed points in the studio such as fire exits, lighting hoists, rails for the cyclorama, etc would be expressed in metric dimensions and a studio set would have to fit within these fixed points. Secondly, by the 1980s most, if not all, of the materials used would be available in standard metric sizes.)

Thus, the diameter of the Rani's Tardis Console podium would be 8 x 300 mm = 2400 mm (and, as I suggested a couple of posts ago) its height is 150 mm. So, we have our starting point.

Going back to the screen grab Gene/Lespaceplie posted, we get the following results:

RaniTardis004 (1).jpg

(Please open screen grab and photos in a separate tab to see them in greater detail.)

(The screen grab has been resized so that 1200 pixels equals 2400 mm. Well, it makes the maths easier and I'm all for things being easier!  :) )

As can be seen, if the podium is 2400 mm in diameter, then the console's plinth is 600 mm in diameter. N.B., this assumes that the console has been placed centrally - depth-wise - on the podium. This is the first caveat.

Now we turn to the excellent HD photograph:


In this photo, the diameter of the console's plinth = 848 pixels. If the plinth is 600 mm in diameter, we can then establish the console's principal dimensions:

The inner diameter of what Gene calls the belt is 1880 pixels and its outer diameter is 1900 pixels.

600/848 x 1880 = 1330 mm inner diameter
600/848 x 1900 = 1344 mm outer diameter
(plinth = 600 mm diameter).

Now for the hemispheres and the height of the belt and the second caveat:

Obviously, we need to compare all the dimensions in the same plane i.e., at the same 'depth' in the photograph as the console's plinth. This causes a problem because the hemi-spheres at the extreme edges of the belt are partially obscured by the ones in front of them. So, this is the second caveat; my best estimate for the diameter of the hemisphere (including its lip) at the equivalent 'depth' in the photograph as the plinth is 150 pixels.

600/848 x 150 = 106 mm diameter hemispheres (including lip) and 100 mm diameter hemispheres (excluding lip).

If we assume that a diameter of 106 mm is correct, we can apply this dimension to the height of the belt using the point in the photograph at which the belt is closest to us:

widths (1)a.jpg

Because the hemispheres are nearer to us, obviously they appear bigger. Thus, the diameter of 106 mm (including the lip) now equates to 204 pixels. In this example, the height of the belt is 213 pixels.

The height of the belt is therefore: 106/204 x 213 = 110.67 mm.

Does this help you Oslm?


Rassilons Rod

Dalek hémisphères are 100mm (excluding lip) so I think it's fair to assume they were the source  (or came from the same source) and so adding another level of veracity to the measurements.

Great work! :)
In the cities in the streets there's a tension you can feel,
The breaking strain is fast approaching, guns and riots.
Politicians gamble and lie to save their skins,
And the press get fed the scapegoats,
Public Enema Number One.



:) :o :)  You must have a star-shaped badge for mathematical excellence somewhere in your house because that is incredible work --

With those numbers I will be able to update my initial console drawings to match and better fit the room -- It's nice to know that I wasn't
to far off on some of my calculations, but between your work and Gene's set plans I think I can make a great 3D representation of this
one-off console room

So once again Tony, Gene (and Marc) thanks for all of your help and hopefully I will have an update for this soon --


Jeff (Oslm)

tony farrell

Glad to have been off assistance Jeff. (I may call you Jeff, mayn't I?)  :)

One thing I did notice on the plans which might need clarification: The plans refer to the circular ceiling unit as being +3000 mm. This isn't the diameter but, rather refers to the height of its bottom surface from the studio floor!

Looking forward to seeing more renders!



There's one problem with photogrammetry of cylinders. The far left and right borders do not really lie in the center plane. This lead to an error in the hemi count.

At the suggested outer diameter of the belt and size of the hemis (including flange), and the previous assumption that there are 30 hemis, the spacing would be too great between each hemi. The hemis seem to be out of phase with the panels as well so this suggests the number of hemis isn't a multiple of 3. For everything to fit correctly, there must be 32 hemis. This also means the high res photo, though showing a hemi in profile, is not showing a hemi intersecting the actual center plane. The one in profile is forward of that.

Regarding the belt height, consider the uneven vertical alignment of the hemis and their estimated 106 mm diameter with flange. There appears to be at least 1 cm of space above and below most of them. With wiggle room I propose the belt was made from a 7.5 mm strip at a height of 12 cm (or maybe even 12.5 cm) that was trimmed flush to the panel angle resulting in it being a little shorter on the outer diameter.

I propose the plinth under the belt is 60 cm high, the panels rise 15 cm, and the crown is 6.5 cm high (6 cm cylinder with a 5 mm sheet glued on top).

At any rate, I'll work up the drawing shortly.


I believe that Gene is correct about there being 32 hemi's instead of 30 -- I thought that each one was 150 mm in diameter (6" inch) but
if Marc is right about them coming off of Dalek molds then it's easy to fit 32 onto the belt of the console --

Also when I count the ones seen in the photo, I get 16 (not counting the one obscured on the left side of the photo)
and if that is half of the console showing, then 16 easily becomes 32 spheres --

So with that, I will remake them at 100 mm in diameter (4" inch) and place them around the belt --

As for the belt itself, my plan is to make it 112 mm in height (4.5" inches) and have about 0.25" gap at the top and bottom of each hemisphere --

Hopefully I will have a test image up shortly --




Feb 08, 2017, 09:59 pm #26 Last Edit: Feb 08, 2017, 11:43 pm by lespaceplie
This should be much closer. I'm not sure if we can determine the diameter of the top taper of the panels, but it's narrower than the plinth, of course. I brought it in 4 cm from the edge of the crown.

Every time we refine a prop, I always say I want to build it, but this time I'm seriously tempted. It's quite gorgeous for a one-off.



Hi Gene,

I did a quick test render of the belt with the new dimensions and this is the result --


I think this is a good match for the HD reference image (although to be more screen accurate I would have to offset some of the hemispheres)


tony farrell

Feb 08, 2017, 10:20 pm #28 Last Edit: Feb 08, 2017, 10:57 pm by Tony Farrell
That's a really nice diagram of the Rani's Console Gene - I like it!

Since I've always liked this set and this topic has aroused my interest, I'd like to ask a question if I may.

I've re-read this thread and can't find anywhere that it was suggested there were 30 hemispheres rather than 32. Have I missed something? (A quick study of the HD photo posted above would seem to support the idea that there were 32 as is currently being suggested.)

That's also a really nice render of the belt Jeff. I like that too. Out of interest, when you state that this is to revised dimensions, is that dimension Gene's 120 mm height or your 112 mm? (Based solely on the one HD photo that was posted, I calculated the height at 110.67 mm, so 112 would appear to be very close.)

I hasten to add that this remark is in no way intended to be disrespectful to Gene/Lespaceplie - I just think that the asymmetry in the hemispheres' lips/flanges accounts for the visible gap above (and below) some of the hemispheres whereas others are virtually touching the top and bottom edges of the 'belt'.

This picture might help illustrate my point:


(For the benefit of future readers, I should perhaps add that the figure of 150 represents the pixel count of the diameter of the hemispheres and also when I calculated the inner and outer diameter of the belt in my previous post I used the pink and cyan lines added by Lespaceplie as being an accurate basis for my calculation of the belt's diameter - see   http://tardisbuilders.com/index.php?topic=7095.msg93071#msg93071 .)


The origin of 30 hemis is from me - the number depicted in the old diagram.