Wooden Hourglass of 30 minutes

Wooden hourglass with blown glass fild with yellow sand

Type of object:

Timekeeper & Sundial & Compass & Barograpf

Time period:

Britain rules the waves & France

Place:

England

Date:

1750

Maker / Author:

Not Known

Publisher / Printer:

n/a

Dimensions:

17.5 cm high

Material:

wood, glass and tar

Graduation:

30 minutes

Inscription:

none

Provenance:

n/a

References:

Delalande Hourglasses of the past; pag 298 nr 48 (c 1700)

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Description

Hand-blown glass bulbs mounted between turned wood plates with wooden supports filled with vulcanic sand, with original tar covered binding. This type could be hang and turned every 30 minutes.