.jpg?w=1)
ENGLISH, FIRST HALF 19TH CENTURY
细节
A WATT-TYPE ENGINE INDICATOR
ENGLISH, FIRST HALF 19TH CENTURY
the felt-lined case, possibly imcomplete, includes two valves, indicator cylinder, panel, weight, seven springs (two of which contain manuscript notes inside), and other parts.
the case 15in. (38.5cm.) long
ENGLISH, FIRST HALF 19TH CENTURY
the felt-lined case, possibly imcomplete, includes two valves, indicator cylinder, panel, weight, seven springs (two of which contain manuscript notes inside), and other parts.
the case 15in. (38.5cm.) long