Nonintervening military service credit. The amount due for the purchase
of credit for military service other than intervening military service
shall be computed by complying the average normal cost rate for Borough,
Town, Township and Regional Police Pension Plans as certified by the
Public Retirement Commission, but not to exceed 10%, to the members
average annual rate of compensation over the first three years of
municipal service and multiplying the result by the number of years
and fractional part of a year of creditable non-intervening military
service being purchased together with interest at a rate of 4 3/4
% annually from the date of initial entry into military service to
the date of payment.