Too easy.?ÿ
I always wondered if the early electronic instruments from Europe measured in gon's and converted to degrees, especially the Geodimeters.?ÿ Their manuals were full of gon's.?ÿ I know that they measured in meters and converted to feet in those days
I know that they measured in meters and converted to feet in those days
I thought that all EDMs measure in meters.
For Geodimeter 400 series, MENU 3 SET UNITS, enables distance and angle units to be set to your preference.
For Geodimeter 100 series the switches under the top cover do the same and also let you set whether the theodolite on which the unit is mounted is in face left or face right.
I suspect they all still do as well, I just don't know it
I do all computations in meters and gons, so much easier to work with when programming and adjusting. No conversion between DD.dddd and DD.MMSSs, etc. When I read data from a data collector file into my database, it converts it to gons if it is in degrees-minutes-seconds.?ÿ
But I don't use gons for latitude/longitude, that is going too far!
Radians are easier.
True, but gons to radians (G*PI/200) is MUCH easier than DD.MMSSs to radians
Brad Ott; Nice link. Gon's are easy to work with (read on an optical inst.) They are NOT an SI unit of angular measurement, but nothing
that I know of (instrument old optical or TS is). I have?ÿ a circular protractor that is in Radian's; its neat.
?ÿ
Norm Larson; Before the electronic instruments there were inst. like the Wild T2 and the Kern DKM1 and DKM2 that were in gon's.
A study was done by ACSM in the 60 or 70 and a little more that half the instruments on the market were in gon's. As for the electronic
inst. the Kern DKM2 would read either in DMS or gon's were the gon's were better resolution (0.2 to 0.3 seconds).
?ÿ
Jim Frame; you are correct EDMs do measure in meters (metre) and then convert to feet as the HP3800B did. Tellurometers
gave meters. Mekometer gave meters etc.
?ÿ
JOHN NOLTON
PS The Wild T2002 and the Wild T3000 gave you a choice of 4 different angular units to measure in (and others inst.)
DMS,?ÿ Deg.decimal?ÿ of deg.?ÿ Mils and gon's
In my post above its not the electronic DKM2 ITS the Kern E2
?ÿ
JOHN NOLTON
