On the tower site at ground level would be located a covered stand in which held a graduated glass cylinder for measuring the amount of rainfall, a wet/dry thermometer which, when read and referred to a table, would give the humidity, and a high/low thermometer for obtaining the high and low temperatures for the day.
(a covered stand in which; held; a graduated glass cylinder; for measuring the amount of rainfall) (a wet/dry thermometer; would give; the humidity; T:when read and referred to a table)
a covered stand in which a wet/dry thermometer
held would give
a graduated glass cylinder for measuring the amount of rainfall
the humidity T:when read and referred to a table