what this tool is for?

[fausto copy]

Can someone please enlighten me as to what tool this is for please?

Tool 02.jpg (137.94 KiB) Viewed 1199 times

Ta, fausto.

[thirdcrank]

To hold slotted chainwheel nuts while tightening the bolts?

[cycleruk]

Depending on the thickness of the tips it could be used for screwing spoke nipples.
It will also fit "tamperproof" screws that have a slot with the middle raised. (there are many variations of tamperproof now.)

[Ron]

Different sizes are available, its a slotted nut driver.

If still in doubt here is a pic of slotted nuts..
https://www.ebay.co.uk/itm/SLOTTED-COUN ... 2442128157

[fausto copy]

Thank you gents... I feel like a slotted nut for not knowing.

[Mick F]

I have a normal flat screwdriver that I cut a slot into, to fit spoke nipples.

[crazydave789]

could be a valve remover.

[hemo]

could be a valve remover.

Big valves

[robc02]

I haven't seen one of those for years! (The tool I use for chainring bolts is a flat spanner like this). We used to call them "ring drivers", and used them to tighten/loosen the "ring nuts" that held electrical relay coils in place in Post Office 3000 type relays used in Strowger telephone exchanges - for those familiar with such things.

[profpointy]

I have one for undoing the knobs from scuba diving tanks

[Mick F]

I haven't seen one of those for years! .......... We used to call them "ring drivers", and used them to tighten/loosen the "ring nuts" that held electrical relay coils in place in Post Office 3000 type relays used in Strowger telephone exchanges - for those familiar with such things.

Yep!

[paddler]

I haven't seen one of those for years! .......... We used to call them "ring drivers", and used them to tighten/loosen the "ring nuts" that held electrical relay coils in place in Post Office 3000 type relays used in Strowger telephone exchanges - for those familiar with such things.

Yep!

My first thought was - No.1 Screwdriver.

Dave

[robc02]

I haven't seen one of those for years! .......... We used to call them "ring drivers", and used them to tighten/loosen the "ring nuts" that held electrical relay coils in place in Post Office 3000 type relays used in Strowger telephone exchanges - for those familiar with such things.

Yep!

My first thought was - No.1 Screwdriver.

Dave

Here is a list describing Screwdrivers Instrument Nos 1 to 12:
http://www.britishtelephones.com/tools/screwdriverinstrument.htm

and a list of other PO tools:
http://www.britishtelephones.com/menutool.htm

Unfortunately there are no pictures under the Ringdrivers heading. I don't even know if that was the correct name for the item like the OP's - It's just what we called it locally, but it does sound right.
My own example went years ago when I handed in most of my Strowger tools, keeping just a few that could be used for other things. The storeman told me I needn't have bothered as there was no mechanism to formally book them in and they would just be scrapped! More recently I regretted it as we have a small working Strowger model at my place of work, but no tools to correctly adjust it.

[crazydave789]

could be a valve remover.

Big valves

well he didn't show the diameter of the shaft - but a friend with a garage has something similar next to his tyre changer. of its 5mm that shoudl be about right.

[fausto copy]

I've still got my Screwdriver, instrument, numbers 1 to 3.
And thanks for reminding me there used to be storemen.