Section 257(3) in Rajasthan Land Revenue (Land Records) Rules, 1957
(3)In order to determine whether the instrument is suitably placed and in thoroughly good order he should ascertain:-(a)whether there are any trees growing up or houses being built which are likely to affect the exposure;(b)whether the gauge is firmly fixed so that it is not likely to be blown over;(c)whether the rim, when pressed home, is level. As all gauges are made level when first erected, it will not be necessary for the Inspector to use spirit level. He will need to see that no obvious displacement of the gauge has taken place; and(d)whether the rim of the mouth of the funnel is circular. All gauges are accurately measured before being issued, and unless the rim is obviously damaged or out of shape, it is not necessary to measure the diameter, which is generally 5 inches.
