Mahogany Cased Barograph by R. Stewart

Name: Mahogany Cased Barograph by R. Stewart
Brand: Antique
SKU: SA958348
Availability: SoldOut

1900 - 1920

Sold by Shackladys Antiques

Description

R. Stewart Mahogany-cased Barograph, having five glazed hinged lid, and a drawer below to house the charts. The mechanical eight-day movement is housed in the drum, fitted with a seven-day chart that covers one full rotation of the drum. The ink trace, or barogram, on the recording paper, is a visual record of changes in pressure.

The aneroid barometer mechanism has seven stacked vacuum capsules and utilizes a gate suspension, a refinement developed to improve sensitivity. The barograph has a thermometer and its original glass ink bottle recessed into the case.

Dimensions

Height 8.5 Inches

Width 14.5 Inches

Depth 9 Inches

Physical Dimensions

Height

22cm (8.66")

Width

37cm (14.57")

Depth

23cm (9.06")

Declaration

Shackladys Antiques has dated this piece to the 1910s.

Reference Numbers

Sellingantiques Reference

SA958348

Dealers Notes

Delivery Information

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Description

R. Stewart Mahogany-cased Barograph, having five glazed hinged lid, and a drawer below to house the charts.

“

The mechanical eight-day movement is housed in the drum, fitted with a seven-day chart that covers one full rotation of the drum.

Shackladys Antiques

The ink trace, or barogram, on the recording paper, is a visual record of changes in pressure.

fig 1. Mahogany cased Barograph by R. Stewart — fig 1. Mahogany Cased Barograph by R. Stewart

The aneroid barometer mechanism has seven stacked vacuum capsules and utilizes a gate suspension, a refinement developed to improve sensitivity. The barograph has a thermometer and its original glass ink bottle recessed into the case.

Dimensions

Height 8.5 Inches

Width 14.5 Inches

Depth 9 Inches