  Chromospheric magnetic fields are of paramount importance in understanding
the dynamics of energetic events in the solar atmosphere. At the Kodaikanal
Solar Observatory, several polarimeters were developed in the past to study the
active region magnetic fields. A new polarimeter has been developed and
installed at Kodaikanal Tower-tunnel Telescope to study the active regions at
Chromospheric level, in Ca II $8542~\AA$ spectral line. Design aspects of the
instrument and polarimetry strategy are discussed. Telescope instrumental
polarization has been revisited and possible ways to reduce it have been
proposed. Telescope polarization model developed in Zemax to examine the
analytical instrumental polarization model is discussed. The polarimeter
control unit, and the software developed to operate the polarimeter are briefly
described. Polarimetric calibration of the instrument, observations,
corrections for instrumental polarization and the sample Stokes profiles are
presented. Polarimetric accuracy and sensitivity are estimated to be better
than $3\times10^{-2}$ and $3\times 10^{-3}$ respectively.
