flexi-bot/docs/marlin/_gcode/M048.md

tag	title	brief	author	requires	group	codes	notes	parameters	examples
m0048	Probe Repeatability Test	Measure Z Probe repeatability.	thinkyhead	Z_MIN_PROBE_REPEATABILITY_TEST	calibration	M48	Requires `Z_MIN_PROBE_REPEATABILITY_TEST`.	tag optional description values C true Probe with temperature compensation enabled (`PTC_PROBE`, `PTC_BED`, `PTC_HOTEND`) type default bool 1 tag optional description values E true Engage for each probe tag type engage bool tag optional description values L true Number of legs to probe tag type legs int tag optional description values P true Number of probes to do tag type count int tag optional description values S true Star/Schizoid probe. By default this will do 7 points. Override with `L`. tag description 0 Circular pattern tag description 1 Star-like pattern tag optional description values V true Verbose Level (0-4, default=1) tag type level int tag optional description values X true X Position tag type pos float tag optional description values Y true Y Position tag type pos float

Probes come in many flavors and as such have varying levels of accuracy, reliability, and repeatability, depending on several factors. This command tests the probe for repeatability (precision) and produces a standard deviation based on two or more probes of the same XY position.