In excellent condition
It consists of a thermal imager and a hygrograph. The temperature sensitive element is a bimetallic strip ring whose operational characteristics are a low coefficient of delay and resistance to environment. This device controls through appropriate levers a stylus. It is adjustable with a screw and is protected against accidental knocks. The hygrometer has a sensor element consisting of a hair bundle that, depending on the relative humidity varies in length. The change commands, through a system of levers, another stylus. The device has a protection for the hair bundle, a cylindrical cage that slides for maintenance.
The drum contains the clock components, to be charged weekly. Case in painted metal with 2 lights (with glass), with handle on the top of the instrument, it’s hinged on the frame, allowing the extraction of the drum to change the plotted sheet and to charge the clock spring that’s contained in it.
Diagramming paper areas show respectively, below the temperature in centigrade degrees, and on top values of relative humidity. The temperature range is -15 +45° C; the humidity range is: 0 – 100 %
Manufacturer: SIAP, Bologna.
Manufacturing year: 1930s
Parts or accessories: chart sheet in support
Overall size: H x L x D (cm): 28 x 34 x 13
Other measurements: cylinder length 23 cm
The tool records simultaneously the temperature and humidity of the air on the same parallel chart sheet of paper, allowing a direct comparison between these two meteorological parameters.
The same model is exhibited at the Rome Museum INGV National Institute of geophysics and volcanology.
The photos are an integral part of the description.
Shipping via express courier.
|Member since:||April 11, 2016|
Lovely, as described. Packed well. Arrived safely.
The seller will ship the item(s) within 3 working days after receiving confirmation of payment.
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|Rest of Europe||$43.95|
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You can pick up this lot from the seller: Sassari (italia/sassari/sardegna), Italy.
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