Products > Test Equipment
History of Tachikawa (TMK)
Bud:
I wonder what office products IBM was making in 1966...maybe that could give someclues.
fanOfeeDIY:
I have the meter!
What a consistence.
My father used to be an IBM Japan employee started as a type writer engineer, since he was mechanical engineer.
The company grew in electronic and computer industries, while he was keep being a mechanical engineer.
Already retired long time ago.
The 200C analog multimeter was in his type writer service case with other tools like screw drivers and etc.
And I borrowed it when I was in high school from his service bag :) and still keeping it.
The multimeter seems to be slight different revision since it uses regular AAA battery.
The solder joints are still very good and I uses this meter for battery checker some time,
because analog meter draws current and it is easier to hunch the battery life
by watching the speed of needle movements.
I attached the pictures of mine.
This was *the* first multi-meter for me and I really took good care of it until today.
The leather case and leads are genuine. I could assure that.
fanOfeeDIY:
--- Quote from: blueskull on October 08, 2017, 04:22:58 am ---
--- Quote from: joeqsmith on October 07, 2017, 04:32:55 pm ---Musen is the old Japanese word for 'radio'. Keiki is business.
--- End quote ---
Musen is still uses nowadays as wireless, and keiki means measurement tool.
--- End quote ---
blueskull is right. The word of "keiki" used for any equipment looks mechanical and have a meter.
joeqsmith:
--- Quote from: fanOfeeDIY on October 20, 2017, 09:46:48 am ---I have the meter!
What a consistence.
My father used to be an IBM Japan employee started as a type writer engineer, since he was mechanical engineer.
The company grew in electronic and computer industries, while he was keep being a mechanical engineer.
Already retired long time ago.
The 200C analog multimeter was in his type writer service case with other tools like screw drivers and etc.
And I borrowed it when I was in high school from his service bag :) and still keeping it.
The multimeter seems to be slight different revision since it uses regular AAA battery.
The solder joints are still very good and I uses this meter for battery checker some time,
because analog meter draws current and it is easier to hunch the battery life
by watching the speed of needle movements.
I attached the pictures of mine.
This was *the* first multi-meter for me and I really took good care of it until today.
The leather case and leads are genuine. I could assure that.
--- End quote ---
Thanks for the response. Looks like the serial number is 7129031. Would seem to be a newer meter than the one I was given. It would make sense that if they were having troubles with US batteries, they may have changed the case dimensions.
What I find VERY interesting with your dads old meter is that the resistor circled on yours is attached to the meter (-). If you look at mine, you will see it also attached to this same location but has some black sleeve over it. This resistor used to go to the fuse holder but I added the sleeve and changed how it was wired.
On your meter, when you remove the fuse, can the meter read both current and voltage resistance? I wonder if they actually changed the design like I show in later serial numbers.
Wrong mode. Actually, it would be good to how the fuse effects all of the modes on your dads.
joeqsmith:
--- Quote from: Bud on October 16, 2017, 05:02:32 pm ---I wonder what office products IBM was making in 1966...maybe that could give someclues.
--- End quote ---
The Selectric typewriters?
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