COGO program for HP15C

[d b]

(04-24-2016 03:47 AM)RMollov Wrote:  

(04-23-2016 07:00 AM)Den Belillo (Martinez Ca.) Wrote:  Here in Northern California almost all surveyors use an external data collector. A few use the Wild/Leica onboard system, probably because after they pay for a Leica, they can't afford accessories. TDS was popular and is still used. The D'Zign 48 was used by some one-horse guys, and his tunnel tights program was the go-to for that work. Xtratra on the 200LX was pretty complete but it blew up occasionally. A company doing a cut and cover and another one that does precision work on high rise use it. Mostly now you see the Topcon, Trimble, that awful Carlson........or sometimes a guy with a field book, a #6 pencil, and a 15c to figure his cuts. It's a science AND an art. -db

I'm extremely surprised to hear that. Here, in Sydney, Australia I saw external data collector / gun controller some 18 years years ago for the last time. All you see is Leica, Trimble, very rarely Topcon. Calculators in use are mainly hp48 and hp42, lately hp50 or hp35s. Leica is not regarded unaffordable at all. Trimble is apparently instrument of choice for one-man-party. Field books both flavours are long forgotten in the area I live and operate. Can be different elsewhere though.

Cheers,

R; Here, if you think there is any chance of getting sued, you book everything. It's not that a field book is less prone to error. It's certainly not faster or less prone to transposing digits. It's that graphite or ink on paper is more easily explained than data files to a judge. The U.S., and California in particular, is a very litigious society. Land is worth enough to attract the sharks. The choice of using third party data collectors may be local. -db