Unknown stamp on bren tripod

[blitzkrieg]

Hoping somebody may be able to help, I have just received a mk1 tripod with aa leg and original butt handle clips, where the serial number is is a HS stamp with a broad arrow between the letters and a circle around it.
The tripod was made by A.G.E. In Australia in 1941.
Does anybody have any idea what the HS stamp could mean?
I apologise for lack of photos but unfortunately I can't seem to upload them!
Many thanks

Information

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[Brit plumber]

Nearly all the AGE tripods I have seen show a EWS logo

Attachment 57400

[blitzkrieg]

Interesting as that's exactly where my HS logo is, for my future reference what does the EWS logo stand for?
Many thanks!