Man pages matching name pmconvscale in section 3:

pmConvScale.3.en	debian 10 / libpcp3-dev
pmconvscale.3.en	debian 10 / libpcp3-dev
pmConvScale.3.en	debian 11 / libpcp3-dev
pmConvScale.3.en	debian 12 / libpcp3-dev