Grant or Staghound Turret Ring?

[Stuart Kirkham]

Hello

Is this a Grant or Staghound turret ring?

I inspected an old crane on the weekend as I suspected it had a M3 Grant turret ring installed as the turntable.
Unfortunately, I could not get a good look at the ring as it was covered by steel plate. I did manage to get a couple of photos that may help identify the ring.

Of interest was the hex head bolts holding the ring in place. Can't say if they are original. The Grant had the domed screw type bolt heads whereas the Staghound had the hex head. It could be that the dome heads could have been swapped out for the hex head bolts.

The crane was built here in Perth in 1964. I know that many cranes built in Perth around that time used the M3 Grant turret rings.

Any help would be appreciated.