Catalogue. A.H. Abbott & co., manufacturers and importers of mathematical and surveying instruments and drawing materials of every description .. (1896)
Abbott, A. H., & co., Chicago. [from old catalog] · [Chicago] · leaf 133
, of the besl bell metal, and each has two nuts, both being adjustable with the ordinary steel pin rhe level bar is made lound, of line bron/.e. and shaped SO as to possess the gieat est strength in thep.nts most SObjeCt to sudden stiains. The leveling plates aie the same as those used with the… … No. Each. 975. American Dumpy Level, for work not requiring greatestaccuracy, such as ditching, draining, road leveling, etc.Achromatic telescope 11 inches long, object glass X%inch, with rack movement, graduated bubble. Adjustableeye piece to focus cross hairs. Level complete withmetal trivet,…
Drawing instruments
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