Report of meteorological observations for the year 1910, with extremes and averages for the preceding years / by John Dover.

  • Dover, John.
Date:
1910
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: Report of meteorological observations for the year 1910, with extremes and averages for the preceding years / by John Dover. Source: Wellcome Collection.

    4/20 (page 4)
    THE INSTRUMENTS. The Instruments used are nearly all by Negretti and Zambra. The Barometer and Thermometers, verified at Ivew, are tested periodically by an officer of the Meteorological Office. The Barometer is a Standard ; it is on the east wall of the hall, which is on the east side of the house. The Barometer is 144 feet above the sea ; it is so hung that sunshine can never reach it. The Thermometers are in a Stevenson screen 40 yards from the South-East corner of the house. There are four instruments in the screen—a self-recording maximum, a self-recording minimum, a dry bulb, a wet bulb. The Thermometer Screen is repainted annually in the Spring. A self-recording Grass Thermometer is also used for registering the ground frosts ; this is placed a few yards from the Stevenson screen. The Bain-gauge is an “eight-inch” copper Snowdon type, in the open, a few feet from Grass Thermometer. The Weather Vane is 61 feet from the ground, a few feet above the roof of the turret, constructed for carrying the vane higher than surrounding objects. The Anemometer is of the Bobinson cup pattern, about 50 feet above the ground. This instrument is a guide to the velocity of the wind. The dials of the Anemometer are indoors and can be read at any time without discomfort. The cups are five inches in diameter, and they are placed upon 12-inch arms. The connecting rods, from the cups’ axle to the dials, are passed through tubes which are set vertical. A Campbell-Stokes Burning Becorder is used for measuring the amount of bright sunshine. The instruments were examined and tested on June 11th by a representative of the Meteorological Office,