Products > Test Equipment
History of Tachikawa (TMK)
Tepe:
--- Quote from: joeqsmith on November 12, 2017, 08:35:45 pm ---Thanks for taking the time to provide that picture. There is very little written information I can find on the net about these meters and every little bit helps.
It's interesting that your meter has the fuse in series with the common to provide some protecting in every function. It must have been around the time that they started thinking that they may not want disable the voltage measurements. Then again, I have seen a few modern meters that do this same thing.
--- End quote ---
My warranty card states that the importer tested the instrument November 12, 1979. I guess it is reasonable to assume that it isn't a lot older than that.
timb:
--- Quote from: joeqsmith on October 22, 2017, 04:39:31 pm ---I'm sure you could make up all sorts of stories. I doubt an IBM service person would make a house call to repair a personal typewriter. It would make more sense they would send the typewrite to a repair shop.
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Actually, individuals could get a service contracts through IBM. If your Selectric broke, a repair tech would come out and fix it. They were very complex machines, mechanically and required specialized adjustments if certain parts were replaced.
IBM already had a nationwide network of repair techs in place, after all, what company wants to send each typewriter to a repair shop. So it makes sense they’d offer the contract to individuals and small businesses as well. A service contract was about $100, which wasn’t bad considering a Selectric could cost over $1000!
coppice:
--- Quote from: timb on November 13, 2017, 02:37:56 pm ---IBM already had a nationwide network of repair techs in place, after all, what company wants to send each typewriter to a repair shop. So it makes sense they’d offer the contract to individuals and small businesses as well. A service contract was about $100, which wasn’t bad considering a Selectric could cost over $1000!
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The service contract for most IBM equipment worked out remarkably close to 10% of the purchase price in those days. :)
fanOfeeDIY:
--- Quote from: Tepe on November 12, 2017, 02:32:55 pm ---The outside and original box:
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Just nice! With original box.
DF1DA:
Hello Tepe,
thanks for the pictures. The photo of the instruction leaflet with schematics are very helpful. Reason:
It happened to me to find such an instrument at a second hand store during holiday in Denmark for just 20DKR. Comparing it with yours it might be an early version w/o the fuse on the common input, without protection diodes across the meter and with different labels on the inputs. Luckily the AA cells did not (yet) leak, of course now replaced by new ones.
Gerhard
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