What was this signal box equipment?

 
  justapassenger Chief Commissioner

They appear to be length in feet.

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  DJPeters Assistant Commissioner

In the first photo they are signal numbers and in the second photo the length of the sidings in Feet, presumably from clearance point to clearance point or end of siding. Here you are Albert Park And Hendon.

  dylan Train Controller

Location: South Australia
The siding length was measured by the distance between fouling points. On the diagram that’s marked as a dot on the trailing side of the switches, in reality it was marked by a white disc on the ground.
  SAR523 Assistant Commissioner

Location: Chicago, IL
The siding length was measured by the distance between fouling points. On the diagram that’s marked as a dot on the trailing side of the switches, in reality it was marked by a white disc on the ground.
dylan
Interesting... not something I can immediately think of in the period photos I've seen.

Do you happen to have a reference to one?  Would be fascinated to see it (and is exactly what I need for the same purpose on the model railway Smile)
  dylan Train Controller

Location: South Australia
I’ll have a look around, I do remember there being some at Steamranger’s Goolwa depot, set up in the SAR fashion. You’d probably find quite a few are still in the ground at some of the disused yards around SA, but once the white paint rusts off they tend to blend in with the ballast.
  dylan Train Controller

Location: South Australia
If you’ve got the Train Hobby book Country Branch lines SA, there’s one on p45 at Eudunda. It’s in the foreground in front of the cheeseknob. They were basically a dome buried in the ground with a spike through the top to hold them there.
  DJPeters Assistant Commissioner

They are simply a cast iron dome about a foot (305 mm) diameter that was painted white and as has been said had a long spike driven through the hole in the centre to hold them in place. If removed and the spike lost they simply look like a gong type of thing.

Here is a scan of that photo the orange arrow points out the fouling point marker in it that is described by Dylan.

  chooke Station Master

In the first photo they are signal numbers and in the second photo the length of the sidings in Feet, presumably from clearance point to clearance point or end of siding. Here you are Albert Park And Hendon.

DJPeters
Thanks DJ, much appreciated!

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