抄録
A maximum-minimum thermometer named N types one by the author, which can measure at a distance the maimum and minimum temperatures in soils, powder, water, solutions, boxes, chambers and so on was newly planned by means af improving the SIX's maximum-minimum thermeter and was manufactured for trial (See Fig. 1 and 2).
Also the diurnal maximum and minimum humidities can be measured by useing a pair of these thermometers which one is used as wet bulb thermometer.
