HP 48GX Land Surveying Data Collector- TDS Survey Card

I've had enough, retiring after 44 years......this was my calculator, so has seen some use, but has ALWAYS been in the INCLUDED "environmental case" which protects from wind and water. TDS Survey Card with full data collector AND Cogo capabilities......also an unmarked memory card (it's at LEAST a 256k). Calculator functions perfectly with crisp buttons.

** THis one does NOT have an overlay card as it was mine, and I memorized the commands back in the early 90's..........they are still available as both of my local suppliers still sell them for about 10 bucks........

Also included is

1) "Hydrographic and US Land Surveying", International Library of Technology, 1925 Hardcover

2) "One League to each Wind" printed by the Texas Surveyors Association.......on early Texas surveying...very interesting

3) "Practical Surveying Guide to Celestial Observations"........

4) "How to do everything with your GPS"

5) "Legal Topics in Boundary Surveying" +\- 1990 from ACSM

6) "Understanding your Professional Liability as a Land Surveyor" by Madson and Munro

7) "The Liability Environment" by Foster, softcover - not pictured

Good luck