Walnut Cased Barograph by Mappin and Webb

Name: Walnut Cased Barograph by Mappin and Webb
Brand: Antique
SKU: SA952187
Availability: SoldOut

1900 - 1920

Sold by Shackladys Antiques

Description

Mappin Webb walnut-cased Barograph, having five beveled glazed removable 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 9 Inches

Width 15 Inches

Depth 10 Inches

Physical Dimensions

Height

23cm (9.06")

Width

38cm (14.96")

Depth

25cm (9.84")

Declaration

Shackladys Antiques has dated this piece to the 1900s.

Reference Numbers

Sellingantiques Reference

SA952187

Dealers Notes

Delivery Information

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Description

Mappin Webb walnut-cased Barograph, having five beveled glazed removable 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. Walnut cased Barograph by Mappin and Webb — fig 1. Walnut Cased Barograph by Mappin and Webb

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 9 Inches

Width 15 Inches

Depth 10 Inches