ANDREW ROSS; LONDON, 19TH CENTURY.
細節
An Improved Sympiesometer
Andrew Ross; London, 19th century.
In a square mahogany case with a glass, with a silverd back, engraved scales, adjustable sliding log on the right side, and a circular recorder at the bottom left. Some of the original oil remains in the barometric tube, and the mercury remains in the tube for the thermometer. Signed at the bottom of the face ANDw. Ross/London.
22½ x 3¼ in. (57.1 x 8.3 cm.) cased dimensions.
Andrew Ross; London, 19th century.
In a square mahogany case with a glass, with a silverd back, engraved scales, adjustable sliding log on the right side, and a circular recorder at the bottom left. Some of the original oil remains in the barometric tube, and the mercury remains in the tube for the thermometer. Signed at the bottom of the face ANDw. Ross/London.
22½ x 3¼ in. (57.1 x 8.3 cm.) cased dimensions.