HP 3468 voltmeter with HP-IL

[4ster]

(06-16-2015 02:05 PM)Mark Hardman Wrote:  

(06-16-2015 05:11 AM)4ster Wrote:  I missed the last one he sold that had the battery option. I was about to pull the trigger but someone beat me to it. I hesitated over the higher price he charged for the unit. As I look into these units I'm thinking his services are worth the higher price.

As a forester, you might be interested in the follow story about Larry's work (follow the link to the .pdf):

The QIC and the Dead

"Dr. Norman Pillsbury was an early 9825 user who was recently pulled back into the HP 9825’s orbit by a lawsuit. As a California registered forester, Dr. Pillsbury testified in a woodcutting case. Back in the 1980s, Dr. Forrester got a grant to analyze harvesting volumes from tree cuttings. He developed sophisticated programs on the HP 9825 to estimate the volume of usable wood obtained from tree harvesting. Decades later, his efforts as an expert witness prompted him to rediscover his DC100 tapes, to purchase an old HP 9825, and to try to recover the programs and data from those tapes [With major assistance from Larry Atherton]. His story is fascinating."

Click here to download his story.

Thanks for that, I really enjoyed the read. I just finished (if a program is ever really finished) writing a program on my 41 to calculate conifer tree volume for timber cruising. It duplicates an old method used by my boss years ago when I first started working as a forester. It was more for nostalgia than for actual timber cruising. Calculating volumes of conifer trees is much easier to do than calculating the volume of the oak in the link!