Lay the cylinder down place cylinder on it s side for measuring.
How to measure a cylinder door lock.
Measure from the outside edge of the door including furniture to the centre of your door.
Remove the euro cylinder if you are unsure see below for instructions on how to remove a euro cylinder lock.
Screw hole x is the retaining screw for the euro.
The second measurement should be taken from the centre of the screw to the other edge of the cylinder take a closer look below at our easy to fit euro cylinder lock.
This will ensure the euro cylinder protrudes from the backplate of the handle try to keep it as close to the backplate as possible.
So you would measure the distance from the front face of the lock to the centre of the keyhole then again from the front face of the lock to the centre of the follower giving you two individual measurements.
How to measure the size of the euro cylinder lock barrel when in the door.
Now do exactly the same and measure the inner side i.
This is dimension a and is called the external size to centre.
Https www locksonline co uk cylinder index html how to measure your lock faq an oval cylinder has an oval shape and is used in conjunction with an oval m.
Cylinder door locks are not difficult to replace if you have basic diy skills you only need two measurements.
Your cylinder locks should be as flush as possible with the handles maximum projection is 5mm if you current lock sticks out by more than 5mm either side of the hanldes then choose a smaller size.
Anti drill pick bump euro cylinder door barrel lock demo.
Get measurement a measure from the left end of the cylinder to the centre of the fixing hole.
For example you may end up with a reading of 57mm to the keyhole and 106mm to the follower.
If you marked the left side of the cylinder with a pencil then measure from the mark rather than the end.