(no subject)

I've been having a rough mental health weekend. When I'm feeling a loss of control, it helps to feel like I've made sense out of something complex. So, I'm working on diagramming the switches on the VTVM I'm working on.



Each switch wafer has up to 12 contact points, so I bought a compass and protractor from CVS to make diagrams of where the contacts connect. After sketching one out, it occurred to me that there must be some free apps out there online to do this kind of thing.

So I made a circle divided into 30 degree slices to represent contact points, and two concentric circles to represent the short and long rotating internal contact points, and am working out how they all connect to each other and to the rest of the unit.

(no subject)

I just removed the meter to avoid scratching the face while moving the unit around. With it out of the frame, I noticed the date on it. I'd been hoping to find a date somewhere to give me a better idea of when the kit was sold. April 5th 1961; nifty!

I wish it stated the full scale deflection current somewhere on it.