Not at all what was asked for; not available as a handheld stopwatch someone could stand with in 1970 ... and I'm doubtful there's such a thing available today.
Works if you don't mind a lab bench full of equipment, but doesn't appear to match the specification of the request.
Works if you don't mind a lab bench full of equipment, but doesn't appear to match the specification of the request.
Still, thanks for your input.