Welcome to our guide on how to measure a mortice lock!
Whether you’re installing a brand new mortice lock or simply replacing an existing one, it’s important to get the measurements right in order to ensure a proper fit. In this article, we’ll walk you through the key dimensions to measure for your mortice lock and provide a step-by-step guide for doing so. We’ll also offer some tips and considerations to keep in mind along the way.
If you’ve landed here but you’re not actually sure what a mortice lock is, then check out this post first.
So grab your tape measure and let’s get started!
How to measure mortice lock
- Remove the lock from the door (if possible) – This will give you a better view of all the parts of the lock and make it easier to measure.
- Measure the backset – This is the distance from the center of the keyhole to the edge of the lock. To measure it, place a tape measure or ruler from the center of the keyhole to the forend of the mortice lock
- Measure the case depth and height – The case depth is the overall horizontal distance from the outside face of the forend to the back edge of the lockcase. The case height is the overall height of the body of the lockcase only, not including the forend
- Measure the forend length and width – The forend length is the overall length of the visible part of the lock (the forend or faceplate) when the lock is fitted. The forend width is the width of the visible part of the lock.
- Double-check your measurements – It’s always a good idea to double-check your measurements to ensure accuracy. You should also consult the individual mortice lock manufacturer’s instructions for specific product details.
If you’re still unsure, check out this guide
We hope this article has been helpful in guiding you through the process of how to measure a mortice lock.
Remember to always double check your measurements to ensure accuracy and refer to the mortice lock manufacturer’s instructions for specific product details. Properly measuring your mortice lock is crucial for ensuring a smooth and successful installation or replacement, so take your time and follow these steps carefully.
If you’ve got a key stuck in a mortice lock, then be sure to check out our other post on how to remove a key stuck in a mortice lock.
If you’re still feeling unsure or have any questions, don’t hesitate to reach out to Locksmiths of London for assistance.
Thanks for reading!