/diy/ - Do It Yourself

I'm working on an oscilloscope that was new in 1985. It has several trimmer capacitors like pic related. It looks like you turn the piece that has three wings.

They are hard to turn so I think you need a proper tool, but all the ones I find online are like ordinary tiny screwdrivers, plus and minus.

Does anyone have experience with these and/or know where they sell the tool to adjust it? The resistor beside it is 1/4 watt I believe, to give an idea of how small the cap is.