They use old 3V 2R10 battery which is difficult or impossible to find today.
Hi, old friend. It is not that difficult. I recently bought one from the fleabay for a friend's ICE 680-R. Also look here in our country:
https://www.reguerobaterias.es/p90035361_pila-2r10-3-voltios-para-multimetros-ice.html
or, even better, this CR123 to 2R10 adapter:
https://www.reguerobaterias.es/p90041957_adaptador-pila-2r10-mas-litio-cr123-energivm.html
Or, if you have access to a 3D printer:
https://www.thingiverse.com/thing:4803116
By the way, I also happen to have an ICE 680-R from nearly the same vintage as yours (circa 1978). Pretty good analog multimeter indeed!
Oh, hi there.
I have those two meters stashed away in a drawer and with no intention of using them really. I keep them with an old slide rule, a 1970's Casio calculator and other things which i keep not because I need them or want them but because I am a sentimental old fart. And in the same drawer I found I have a brand new "heavy duty" battery for the ICE 680R, still in its blister packaging and so old it is probably totally dead by now. Probably about 20 years old.
I remember I had a problem with the ICE 680R in that the needle would not return to zero and it turned out the plastic front cover has some kind of antistatic treatment and I think I had cleaned the front with solvent and that had removed the antistatic treatment. I took it to the official repair place and they explained the issue and reapplied the antistatic treatment to the front and it worked well again. I seem to remember they did not charge me for that.
Those meters are strictly for the memories, not for actual use. I have other digital cheap meters for working around places and on the workbench I have a humongous digital meter which is most convenient to use because it just sits there on the shelf. I need to build some wooden stands for small multimeters because they are a pain to read when I am holding probes in difficult places.
I have a very small digital meter which I find a bit confusing to use because it is auto-ranging to the max. It has two leads and no selection dial. You just connect the two leads somewhere and it will tell you if there is AC or DC voltage or resistance or .... It just decides what to measure. I am used to telling the meter what I want to measure.
Most of my electronic instruments are from about 1980. The CRT in my oscilloscope is so long the front sticks way out from the shelf.
As part of my collection of old memorabilia of no practical use I still keep a Clarivox CRT TV, circa 1980, which I assembled myself and it still works but I never use it. I have all the schematics and I connected a TDT decoder just for fun.
Yes, I am a nostalgic old fart.