  The sensitivity and automation capabilities of modern superconducting quantum
interference device (SQUID) magnetometers are currently unmatched. The measured
moment values are, however, prone to deviations from their actual value due to
geometric effects, namely sample size, shape, and radial offset. This is well
known, and a knowledgeable operator will correct measured moment values taking
these effects into account.
  The current procedure for the Magnetic Property Measurement 3 (MPMS3)
magnetometer is based on an available simulation tool, valid for both Vibrating
Sample Magnetometer (VSM) and Direct Current (DC) methods. Still, determining
the correction factor requires samples with well-defined geometric shapes
together with accurate sample dimensions and the usually difficult to determine
radial offset. Additionally, at the moment, there is not a proper solution to
correct geometry effects of irregular shaped samples.
  In this work, we find a systematic relation between the difference between
the VSM and DC measurements and their corresponding correction factors for
MPMS3 SQUID-VSM device. This relation follows a clear trend, independent of
sample size, shape or radial offset, for a given pair of DC scan length and VSM
amplitude values. Exploiting this trend, a geometry-independent correction
method is here presented and validated by measurements of metallic Fe powder
using a far from optimal sample mounting.
