The model is hp6521A DC power supply. I searched all over the webpages and could not find it. I am most interested in the specfications like: accuracy, resolution, ripple & noise.
Came up dry too, other than you can buy the manual ($25)from manualsplus.com
Wheels within wheels / In a spiral array
A pattern so grand / And complex
Time after time / We lose sight of the way
Our causes can't see / Their effects.