I believe the Oehler you referenced sells for over twice that amount. I would hesitate to say that it is obsolete, more what you would expect of it. The Lab Radar is the new darling at over $500. it is easier to set up and use as it doesn't use sky screens, therefor more portable. I pondered whether to invest in one, but decided for my needs and range situation, my very old Qelher 33 works just fine. I spoke with GT on this site, and he was very helpful, you might contact him by PM. Krag As a side note, did you ever acquire a highwall hammer?

I purchased a LabRadar a few years ago.  Previously had one that required the paper board guide to shoot through.  

The LabRadar is not inexpensive, but I have used it a lot more than the older style as it can be set up anywhere and without going in front of the firing line or waiting for the line to clear (and them waiting for me to get set up).

Much easier to do velocity readings and group testing as no additional set up is necessary.  I use a data card in mine and download the info to my computer.  It allows examining the results on a spread sheet.  I print these and keep them in a binder with all the load data.

Yes, it is more than some other styles, but I look at it as a "once" purchase (like a good spotting scope).

Great technology.

Mike.

Not sure obsolete is the right terminology since Oehler still supports these and gives great service. Yes, they're not as easy to use as the Labradar, but I wont let my 35P go, and love the way it works. Setting up takes more time, but it's a great chronograph and I love it.