This came in a box of stuff I acquired.
It's a set of alloy rings, each with an identical male & female thread so they all screw into each other.
The thread is approx 40mm dia.
They came in a plastic tube.
With this symbol on the lid.
I'm guessing due to the design that these are photography related, does anyone know what they are for?
It's a set of alloy rings, each with an identical male & female thread so they all screw into each other.
The thread is approx 40mm dia.
They came in a plastic tube.
With this symbol on the lid.
I'm guessing due to the design that these are photography related, does anyone know what they are for?