Another Whatzit

[Plombob]

Found this tool the other day. It looks like a tap handle but the opening is 1/2", which is pretty large for taps. It's grip range is small: 7/16" to 1/2".

It's stamped "Pioneer L. A. CA" and "KNURL-TITE"

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View media item 38690
View media item 38691
So what the heck is it for?

 

[Steevo]

For installing the serrated round escutcheon rings on the front of a switch where it passes through a panel.

 

[zkling]

For installing the serrated round escutcheon rings on the front of a switch where it passes through a panel.

There is an actual tool for that? And all these years I thought the knurling was for a finger grip.

 

[Bobf]

Might be used on the old panel lamps (register readouts) on older computers, pre-led days. The rings were same as the serrated nuts on the toggle switches used to set/clear the lights. Gosh, really dating myself ehhhh.

 

[Plombob]

I checked an old switch and Steevo was right! Bobf could be right too. The estate was a guy who worked at JPL back in the '70s.

 

[7th Kahuna]

There is an actual tool for that? And all these years I thought the knurling was for a finger grip.

How many of those have I fought with a pair of needle nose pliers over the years . . .

I'll have to keep my eyes open for one.