HOW TO MEASURE A WINDOW HANDLE
STEP 1 : IDENTIFY THE WINDOW HANDLE
from - the older style cockspur handles, and their more modern replacement; the espag handle.
The window handle at the top is a cockspur handle. These handles have a triangular protrusion which closes over the frame to secure it closed in place.
On the bottom is an espag handle. These handles have a spindle that fits into the window locking mechanism.
STEP 2 : COCKSPUR HANDLES
Looking at the handle face on, note which side the protrusion is: if it is to the left of the handle this is referred to as a right-handed window handle as the handle pulls up to the right; if it is to the right this is a left-handed window handle as the handle pulls up to the left.
It is then necessary to measure the stack height (A). This is the measurement from the back of the handle - where it attaches to the window - to the back of the spur.
STEP 3 : ESPAG HANDLES