I think Bell & Howell Schools was a vocational school like CIE or DeVry. So the voltmeter would be provided with some of their courses or used in their facilities.

If you Google "Assembly Manual for the Bell & Howell Schools Digital Multimeter 9550-2 Part 1" and look for the link to the Internet Archive this is the manual for this meter. I think around the time this meter came out Devry Institute of Technology and Bell and Howell Schools became the same company. I have a 1973 vintage 10 volume set of their Electronics Technology course and both companies names are on the cover.

Bell and Howell included a lot of Heathkits in their correspondence school electronics training programs. The common ones include VTVMs, DMMs, and oscilloscopes. They also rebadged various Heathkit color TV kits for their TV repair course....

I miss Heathkit. The real Heathkit of the 60's and 70's. I built everything I could afford. One thing I noticed about their designs is that you could set every trimmer at 50% and it would be nearly calibrated.

That’s probably the owners Social Security number. Ppl used to do that to identify their stuff if it got stolen

That number, under the person's name, looks like a social security number.

Yes, Bell & Howell Schools did a correspondence electronics course and this was one of a number of kits (mostly Heathkit) that was part of the program. My father built one of these. I have a new unbuilt version of this on my to do list.

I have a Bell&Howell Schools oscilloscope that also yells heathkit when you look at it. Says DeVry institute of technology in it. I've heard they were in fact kits built by students. Every one I've seen has different capacitors.

A screw bin is wise, and a magnetic one is even better for me, when i bump it and spill everything.

@4:29 - Is that maybe a social security number someone engraved into the cover? Its certainly the right format, and if so its someone who was born in Michigan - 1979. >_<

Bell & Howell owned both DeVry and Heath. My dad took a DeVry industrial electronics course by mail, and the course included building your own instruments from kits. His course kits included a 5" analogue oscilloscope, analogue TRVM, and a design console for prototyping circuits. You learned both theory and practical by following the course materials and building the kits. Of course, once you completed the course, you had your own, professional grade instruments. If you took the very popular TV repair course, you even got to build your own TV kit.

A friend of my brother had a HeathKit synthesizer with all the patch cords. Cool.