OK guys I won an Ebay auction for an HP 48gx with SMI overlay and an SMI Basic Cogo Card for $135 including shipping. I saw that card alone on Ebay fo...

You all are being very helpful. Thank you all. I truly beleive that I need any HP 48 calculator with a standard cogo card. Memory is not important

My concern is that I cannot remember what card was in the hp 48 that I used. I remember using the 48 for putting in jobs, using it for cogo, point in ...

I have no problem with a pencil and a field book whatsoever. But I was truly looking for advice on what card I would need for an HP 48

I am not looking to use the hp48 as a data collector just as a calculator

So are we all in agreement that I need an HP48gx with an SMI Standard Cogo Card and SMI overlay? I used the 48 for intersections of points to create o...

Mark Mayer, post: 340020, member: 424 wrote: HP no longer makes the '48 and SMI is out of business. Good luck hunting for a used SMI Standard Cogo Ca...