Window Handle Replacement
開き窓のハンドルの種類：カム式、エスパグ式、フォーク式、スピンドル駆動式
Cam, espag, fork and spindle-drive handles are not four completely separate locking technologies. Understanding the difference between a locking mechanism and its drive interface is the key to choosing compatible casement window hardware. This guide explains the mechanical differences, replacement measurements and common specification mistakes.