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 139
PA.H.ABBOTT &CO., CHICAGO! TRANSITS. … No. 987. Each. Plain Engineers Transit, achromatic terrestrial telescope11 inch, dust cap and sun shade, object glass \% inch, ,ximproved rack movement, eyepiece with micrometerfocusing arrangement, adjustable stadia hairs. Needle4^j inch, horizontal limb 6 inch, graduated to half de- •grees, two…
Drawing instruments
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