The Russellville Democrat., 1886-06-30
FAYETTEVILLE, ARK, June 18th. 18S6.
VI " : NsxIHss1S5 Chief Engineer F. x c. E. Ky.

MIR. J. B. FAUCETT-Dear Sir:- From brief examination of your m strument, the "Quadro Geodolite," 1 am convinced that it embodies merits that will soon bring it into prominent use in the survey and To- cation of railroads, thereby filling a long needed want. It's claims are so many and varied that I will not attempt to ennmerate them, only embodying few salient ones in an economic view as they occur to me, viz: Speed, simplicity, accuracy and saving in field hands.
 l. Speed. The calculations are few and so simple that most of them can be performed mentally without the aid of pencil and paper; also in talk ing observations, no measurement of base IS required--the base is embod- jed in the instrument.
 2. Simplicity. The graduations being on tangent, instead of curve, thereby doing away with de- grees and minutes and attendant log arithms, sines, co sines, etc, and sub'' stituting m their stead, feet and inches, it can be comprehended with but little explanation by any one versed in the first rules Of Arithme- tic, there will be little or no adjust. ment of the instrument required when once put in order, any damage done it, would have to be very sefi ous, if it could not be repaired by the one in charge.
 3. Accuracy. In getting the dis tances to objects, no mechanical ap- pliances. as tapes and chains are re- quired for measuring base, this is ever existent as a component part of the instrument, and of sufficient length to give accurate results to all ordinary observations in field prac- tice, extraordinary distances are ob- tained by multiplying this base to any required nlmber without extra neous aid.
 4. Saving in field hands. Not only IS g saving made by getting rapid results but in its combining within itself not only the transit, but level and chain, therefore do,ng away with the help required to manipulate those instruments, reducing the present number in corps to one half at least.
 believe your instrument will be equally as servicable in preliminary lines as in location, and in taking topography can plainly see where it will De of the greatest use. At present when an object no matter how important, is laid down on paper, it is most generally the result of sguess work" taken by the eye. as to meas ure to it, or triangulate requires too much time, and may be base can not be gotten; but with this method, the distance is obtained almost in- simultaneously, and hence the object is laid on the map accurately in place. So with objects further of, such as the apex of mountain, spire of court house or church in town g mile or more away. by obtaining which, other important points in their vicinity can be located though not seen and at the same time that the instrument is set up, the contour and inclination of the ground to the right and left can be readily noted. In fact for accurate and speedy to- pography, hence correct maps, pronounce it invaluable. What place it may take, if any among instru- ments employed in making celestial observations, my limited Knowledge of that science forbids me to hazard an opinion, but will venture the statement that should it find q place at all, 1t wlll not be one of minor character, but on the contrary of such importance as will revolution ize to great extent the present methods. Very Respectfully,
 GEO. BARRETT,
 Civil Engineer.