  We find an analytical regularization for string field theory calculations.
This regularization has a simple geometric meaning on the worldsheet, and is
therefore universal as level truncation. However, our regularization has the
added advantage of being analytical. We illustrate how to apply our
regularization to both the discrete and continuous basis for the scalar field
and for the bosonized ghost field, both for numerical and analytical
calculations. We reexamine the inner products of wedge states, which are known
to differ from unity in the oscillator representation in contrast to the
expectation from level truncation. These inner products describe also the
descent relations of string vertices. The results of applying our
regularization strongly suggest that these inner products indeed equal unity.
We also revisit Schnabl's algebra and show that the unwanted constant vanishes
when using our regularization even in the oscillator representation.
