Winona Coffer Company, 



Greenland, Mich. , April 13, rSQQ. 

 Messrs. C. L. BBROBR & SONS, 9 1-rovince Court, Boston, Mass. 



Dear Sirs: With pleasure I can testify to the splendid qualities of your number 6 mining transit and 

 interchangeable top and side telescopes. It is the most convenient and serviceable instrument I have ever 

 used and as accurate as any of the same size. The interchangeable feature of the auxiliary telescope is an 

 advantage that can only be fully appreciated where one has work in shafts dipping from 60 to 80 degrees. 

 The i .imposition im-t.il you use is the hardest and toughest I have ever handled and stands rough usage and 

 wear in a remarkable manner. 



Yours truly, F. W. DENTON, Agent. 



Comfania del Ferrocarrilde Chihuahua al Pacifico, 



Camp K 67, April 14, i8qq. 

 C. L. BERGBR & SONS, Boston, Mass. 



Gentlemen: Am glad to inform you that transit number 2 (number 2925) wnich I bought of your firm a 

 few months ago has proven to be a first-class instrument in every respect. The graduation and telescope are 

 very good. While using it as a level we do more accurate work than we do with the levels of another firm of 

 good reputation which are principally used on this road. I have charge of about eighty kilometers of work 

 here and can truthfully say that I have found it the best all around transit I have ever used. 



Yours truly, G. H. STRANAHAN, Resident Engineer. 



Thaytr School of Civil Engineering, Dartmouth College, 



Hanover, N. H., April 17, i8QQ. 

 C. L. BERCER & SONS. 



Gentlemen: Atter a long and uniformly satisfactory experience with your instruments, it is your due 

 that we make proper acknowledgment. 



Fifteen years ago we bought one of your number n, complete transit theodolites. It has been in regular 

 (but careful) use with our classes ever since, during fifteen weeks every year. Yet, a year ago, at the time 

 of general cleaning and adjustment of our instruments, my associate assured me that he considered " that 

 B. & B. transit " as good as new. And he verified the opinion by some very good work (for a 20 second in- 

 strument) done by both himself and some of the students in azimuth observations on the sun and on Polaris, 

 to locate meridian. 



We have had one of your dumpy levels in more severe use about seventeen years. It has been loaned 

 and carried out of town and used by our students every year, but we have been careful to keep it in good 

 order. Although the opinion is rife that a " dumpy " is only good enough for architects, builders and land- 

 scape gardeners, we have learned to have great respect for that instrument. It retains adjustment with great 

 constancy and for a long time. Our students, in preliminary practice, commonly do better work with it than 

 with a wye level. 



A shorter experience with some of your ordinary transits and wye levels demonstrates their singular ex- 

 cellence in graduations, optical power, smoothness of operation in all their parts, and, as indicated above, 

 such behavior under trying conditions of service that we consider durability and reliability as notable char- 

 acteristics of all that we have used. Your instruments survive when others, after less service, are put aside 

 as an invalid corps for less important use. 



Very truly yours, ROBERT FLETCHER. 



Engineering Department, B. <Sr M. R. R.R. in Nebraska, 



Lincoln, Neb., April fS, l8()Q. 

 Messrs. C. L. BERCER & SONS, Boston, Mass. 



Gentlemen : Transit number ib, purchased from you the first ot the year, has received a very 

 thorough test and it is but justice to you to state that I am thoroughly pleased with it. In snowstorms, wind, 

 and every temperature it has held its adjustment well. I am particularly pleased with its stability in the 

 wind, its lightness and the clearness of its graduation. 



Very truly yours, F. T. DARROW. 



Metropolitan Street Railway, Electrical Construction Department, 



New York, April iq, i8qq. 

 Messrs. C. L. BERGBR & SONS. 



Dear Sirs ; In regard to the behavior of the instruments I bought of you last January, I would say 

 that as yet I have not been able to give them any very extensive trial. However, as far as I have used 

 them, I find they are all you claim for them. 



Very truly yours, T. B. WHITNKY. JR. 



Parr is A Coal Company, 



rtvmouth, J'a., April 25, iSqq. 

 C. L BP.RGBR & SONS, Boston, Mas*. 



Dear Messrs. : Transit number 2945 received by us last December has been given a thorough trial un- 

 der the various conditions of the anthracite coal mines and has given excellent results. The adjustments 

 have been tried repeatedly and been found correct. The graduations are especially distinct and easily read. 



Yours respectfully, JOHN < \. SM YTH. 



Commonwealth of Massachusetts, Metropolitan Water Board. Engineerin 



Boston, Mass., April 25, i8qq, 

 C. L. BERCKR & SONS, 9 Province Court, Boston, Mass. 



he Metropolitan Water Board, since its organization in 1895, has purchased from the 

 firm of Huff & Berber, of whom you are the successors, twenty r:msits ;vn<l twenty-one wye levels. 



Yours truly, .IHN N. FERGUSON, Assistant Engineer. 



