Catalogue and price list of Mackey print paoer co. (1897)
Mackey print paper co., Pittsburg, Pa. [from old catalog] · [Pittsburgh?] · leaf 224
he Ys and are held in posi-tion by clips which are hinged and locked the same as in theengineers level. The instrument turns upon a horizontal circle3 inches in diameter, graduated from 0 to 90 each way. and isread to five minutes by a vernier which is fixed to the spindle.The instrument is screwed… … 212 ^Kw^^^»^^\^^^^i ^lACKhY <?%~* MR PITTSBURGH CHICAGO COMPLETE EXGIXEEES AXDSURVETORS TRAXSIT.
Drawing instruments
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