  The India-based Neutrino Observatory (INO) is an approved multi-institutional
experiment of India. It will use maximum 30,000 Resistive Plate Chamber (RPC)
of size 2x2m as an active detector in which each will be sandwiched between two
iron plates. Each RPC detectors will be made up of 3mm thick glass (or
Bakelite) plates whose one surface will be coated with graphite paint to work
as electrode. To achieve effective and uniform electric field, the coated
graphite paint must have uniform distribution over the glass surface.
Uniformity can be demonstrated by measuring the surface resistance of the
coated graphite paint. However, manual measurement of 60,000 electrodes with
the help of multimeter and the jig demands huge amount of person-hour with
compromised accuracy, and therefore that requires the need and importance of
the automatic scanning system. An advanced automatic scanning system (ASS) has
been designed & developed to fulfill the required needs and overcome the
shortcomings of the initially developed system. Measurement are sensitive to
the contact pressure between the jig and RPC electrode's surface. In this
paper, various parameters of the ASS have been precisely fixed. Obtained
results are compared with the standard one and found satisfactory within error.
It has been observed that for obtaining the correct and safe value of surface
resistance, applied pressure value in terms of force should be in the range of
9-11 Newton.
