Black and white engraving in good-plus condition of the design for Troughton's barometer. Print depicts the different parts of the barometer labeled as such. The barometer is rendered in fine detail with delicate lines. Print has no tears or chips. Paper has a slight yellowing consistant with age and some darkening along the bottom edge, but this does not extend into the image area. Print measures 9 1/2" x 6 1/4" and image measures 9" x 6" (height by width). ; 9 1/2" x 6 1/4"