Stanley Fatmax Stud Finder 400 Manual Verified __full__ Jun 2026

: Studs are typically spaced 16 inches apart. Once you find one, measure 16 inches to the left or right to find the next one.

Because the FatMax 400 is magnetic, it does not use a typical "calibration" button found on electronic models. Instead, follow these physical scanning steps: : Hold the unit flat against the wall surface. stanley fatmax stud finder 400 manual verified