To　address　the　measurement　issues　posed　by　fine　pitch　gears,　due　to　the　characteristics　such　as　low　stiffness　and　narrow　tooth　space,　this　paper　proposes　a　rapid　and　high-precision　measurement　method　which　does　not　require　precise　installation　by　combining　optical　and　visual　principles.　A　calibrated　artifact,　featuring　cylindrical　and　flat　surfaces,　was　designed　to　accurately　determine　the　relative　positions　of　the　line　laser　sensor,　camera,　and　rotary　table.　An　experimental　setup　was　constructed,　and　measurement　experiments　were　conducted　on　two　types　of　cylindrical　gears.　To　validate　the　precision　of　the　measurement　system,　gear　profile　deviation,　helix　deviation　and　pitch　deviation　were　evaluated　according　to　ISO　1328-1:2013.　The　results　were　compared　with　the　reference　evaluations　from　Klingelnberg　Gear　Measuring　Center　P26,　with　difference　less　than　2.4µm.　Eight　repeatability　experiments　were　conducted,　demonstrating　that　the　method　proposed　satisfies　the　measurement　requirements　for　fine　pitch　gears　with　an　accuracy　of　class　6.　©　2024　Elsevier　Ltd