My first chronograph was a stone-age Custom Chronoraph model, back in the early 1970s. On this one, two paper screens printed with a metallic ink pattern had to be changed for EACH SHOT, and you couldn't fire at a target while taking speed readings.
To get the reading, after the shot a knob was turned through about six or eight positions, and the numbers at each position where an indicator light lit up were added together. Then the total was found in a printed table, and VOILA'...there's your velocity! And some guys think they have it rough today???
At the time, I loved it. Actual velocity figures for personally-loaded ammo were VERY RARE in those days. It sure destroyed a lot of "estimated velocities" among handloaders!
Since then, I used a first-edition PACT Model One until fairly recently, when it finally started showing its age and began acting-up after about 15 years or more of intensive use. My wife took the opportunity of my new "need", and gave me a CED Millenium for our Anniverary last year.
It's clearly a full generation or more ahead of the PACT, with big readouts, an array of soft-touch control buttons, and many other neat features. I REALLY like this instrument. The screens are mounted on a steel-conduit boom which slots into the front of my benchrest, and the screens' midpoint is ten feet from the face of the bench. This has worked fine for everything from the .22 Long Rifle to full-blast (literally!) .416 Rigby loads with over 100 grains of powder. Did I mention that my benchrest resides in my 1995 GMC shooting-dedicated van???
My wife bought this CED from Dillon Precision, and I'd say she got me a gem. From replies here, it sure looks like the Chronys have achieved wide market "penetration"....