Metarology
Product Details:
HYGROMETER WET & DRY [1010.1 PH]
Two same scaled mercury filled thermometers, fitted on the base. One of these bulbs covered with cotton sleeve dipped in water contained in plastic water bottle with reading of two thermometers and temperature table the humidity is found.
Range : 20 to 50 Deg C in 1 Deg divisions
Size : 320 mm in length approx.
 MAX-MIN THERMOMETER [1010.2 PH]
A U-Shaped thermometer tube of the six pattern Magnifying lens tube have special metal indicies for registering highest and lowest readings. These are reset by a small magnet.
Max. Range : 30 to 50 Deg C
Min. Range : 50 to 30 Deg C