@theonlysbf
what I love about Mark 1 he explains everything, 2 he reuses everything he can including screws, 3 he does not speak to the viewer like they are idiots. 4 when he finds something which has been poorly repaired or designed he keeps his counsel and just fixes it. 5 He is very watchable and I have learned so much about recyling.
@flint9591
I worked for Simpson in Elgin, Illinois, back in the early 70's as a calibration tech..Good times ! Thanks for a blast from the past !
@bruceharris5734
Hi Mark, Wow, when I stated my Instrument Maker and Repairer apprenticeship back in 1966 it took 3 years before they allowed me to work on the corprorations 'Avo's". We did all you did including re-calibrating the moving coil meter. Thank you for bringing back old memories and bloody good times. My trade served me well and now retired. Once again love your channel and keep em coming, you make a 75 year old young again. Cheers, Bruce
@victorhugotoledocofre1366
Watching Mark's dedication to repairing all those vintage appliances is not just a lesson in electronics; it's also a lesson in life 😍👍
@rickarmstrong4704
Thanks Mark! 44 Years in the Millwright/Industrial Electrician trade and never was there a Shop void of this Meter! The Owner will be Over The Moon I am Sure! Cheers from Canada
@jadney
The instant you found the VAC range not to work, I knew the two Ge diodes were shot. The 1N4007s you replaced them with will never die, but the larger forward Si voltage drop will cause errors, most noticeably in the lowest voltage ranges. Note that there's a special 2.5 VAC scale, that's calibrated for Ge. A pair of 1N34s would be a better choice. Otherwise, a very nice restoration. I especially liked the plating of the replacement brass contacts.
@charly4594
A week after seeing your excellent repair of this Simpson meter, I purchased one on Ebay and using your expert presentation, I repaired mine to a working unit in a few days. It is now my favorite VOM and it is the exact model that I used when in the Navy back in the seventies. I was a P-2 and P-3 aircrewman, and these units were standard equipment if we had to troubleshoot equipment in flight. Thank you so much, as I watch all of your repairs and it has brought me to a whole new level of electronic competency.
@thirstyCactus
17:50 Just a note from a former Simpson repair hobbyist - there is a fork pointing downward from the coil assembly (at the bottom of frame), that must align with a pin on the glass frame for trimming the zero position of the needle. Apologies if you'd already mentioned this and I'd missed it.
@BDJones055
I was a signalman on the B&O railroad roster for 15 years. We used the Simpson 260 everyday. I still have mine and love it.
@shawnhayden6674
My 1st studies in electronics took place in the late 80s in Nova Scotia, Canada. In our first year of studies we were taught meter movement and the old Simpson meters were the devices we learned on. We were not allowed to use the Fluke meters until the second year of lab studies. Cool to see a Canadian Simpson here on the channel. Great memories.
@RPike-bq3xm
You might be surprised but all those metal bits are still available. Of course buying them is not as fun as making them by hand. Great instruction.
@iantyler4045
What a lovely well built instrument. There's still a place in the test equipment arsenal for an analog meter ie I.F. alignment etc. Very nice repair.
@SoulStarLA
While you are a superb electronics repair person whom I can learn so many things from, the real greatness of your videos is your amazing attitude during repairs. If something goes wrong, you smile or you laugh. Perfect! Almost anyone else cusses, hisses, or gets angry. Wonderfully enjoyable to see someone with such a great positive attitude that is so important to try to keep while doing this work. Thank you Mark!
@raymondstrom7686
Great job on this one. In the 70s, working at the Southern Alberta Institute of Technology, Electrical Department Maintenance Shop, we repaired numbers of these units that had been used by students in their course work. Cleaning, calibration and even rewinding meter coils, which was the most finicky work. These were tough meters that stood up really well, and repaired relatively easily. Perhaps our reward was knowing we helped train a generation of electricians, a trade I highly respect. This one brought back a lot of good memories. Thank you. Would love to see you work over a 70s organ as they are making a comeback.
@ger20cam11
I´m electronic engineer from southamerica and had the chance to see (and use) some Simpson mmeter back at the Uni in the 90´s. By that time those were already old but its beauty and accuracy make them very popular among the students and very well preserved. Our very first time to check voltage and current was on those wonder instruments.
@MrTherende
I used the Simpson in the early 1970's when I was an electronics technician in the US Coast Guard, a great tool!
@GraemeSPa
When I first went to sea as an engineer in 1973, the ships I sailed on were British built and all had AVO8 meters. Later I worked for a US company who kitted out their Japanese built ships with US tools - this is where I first met Mr Simpson. In the 80's we were given Fluke meters and told to dump the old meters. I went looking for Mr Simpson to take home with me, but the Chief Engineer had beaten me to it. Digital meters are all well and good, but nothing beats the visual feedback of a moving pointer. I buy the cheap no name digital meters, but they all seem to develop a problem with the current function - and no, it's not the fuse. Best meter I ever had is a Kamoden , bought it when I was 14 and it still works, despite being left out in the rain one night.
@adf360
Hi Mark, it's 2025 and the USAF still utilizes these for finding aircraft wiring gremlins. They are so sensitive, you can tap/shake/tug on a wiring harnesses and watch the needle twitch/flick and narrow down your search w/out hauling out a $20K oscilloscope.
@patrickjmorgan
I’m pretty sure that Simpson was the make of meter we were issued on Otis in the early 70’s. It was smaller than that one but not very tolerant of ‘mistakes’ . To be honest, we got by with a 120v test lead as 110v was our control voltage for just about everything.That yellowing to the dial- We all used to smoke in those days!
@MendItMark