Lo scrive espressamente in una delle pagine e spiega anche che l'inclinazione va calibrata per evitare che la luce diretta entri dal basso.
Dice anche espressamente che per avere le caratteristiche che dichiara bisogna seguire il progetto pedissequamente.The disadvantages of the Meteorological Agency type ventilation tube, which has a structure that is easy to maintain and inspect, are its high price and its exhaust structure facing downwards. In this type of ventilation tube, exhaust gas is generally sucked again from the intake port and circulated during a slight wind, and the temperature may be observed as high as 0.2 to 0.4°C. The vertical
type of the Kondo type precision ventilation thermometer (made by Preed) ( "K126. Commercialization of high precision ventilation type thermometer" ) developed for research observation has a light weight and low price, but the drawback is the circulation flow during snowfall. Preventive discs may snow and cause insufficient exhaust.
As an improvement, the vertical type is inclined at 45 degrees, and the structure is such that it is exhausted to the lower and rear, so that the exhaust is performed normally even during snowfall. The prototype test was conducted in "K200. Prototype test of air duct for temperature and temperature" .
Il motivo per cui l'ha realizzato è dovuto al fatto che vogliono raggiungere una precisione maggiore per stimare il riscaldamento globale dove 0.1° contano.
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