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Rain Gauge

Overview

"Tilting Bucket" Recording Rain Gauge.
Glass case with a copper frame on a brass base. "Tilting Bucket" Recording Rain Gauge. Records rain fall in increments of 1/100 inches. The rain is led to a bucket with open ends, divided into two compartments, and pivoted about its central point; it tilts over when .01 inches of rainfall has been collected. An escapement advances a toothed wheel to which is attached a profile cam; resting on this cam is a brass roller attached to the pen arm, which is thus raised step by step for each .01 inch of rainfall up to 1 inch; the roller then trips of the cam and the pen returns to the zero of the chart; an oil filled dashpot dumps the fall. Attached to the escapement wheel is a dial graduated to 2 inches in sub divisions of .01 inches.

Details

Details

Registration number
cwa-org-124-2021.66
Material
Width
530 mm
Height or length
660 mm
Depth
340 mm
Inscriptions and markings

NEGRETTI & ZAMBRA
TRADE MARK
NO. M/1124
LONDON

Place made
London
United Kingdom
Busselton Historical Society

Busselton Historical Society

Organisation Details
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