> For the complete documentation index, see [llms.txt](https://docs.moasure.com/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.moasure.com/en/moasure-lx1/your-moasure-lx1-device/reference-point-left-right.md).

# Reference Point (Left / Right)

LX1 records measurements from one active point of the device — either the **top-left** or **top-right outer point**.

This active side is called the **Reference Point**.

The reference point defines the exact position recorded each time the device confirms a **pause point**. It ensures the floor plan geometry aligns correctly with the physical surfaces you measure.

By default, the **left reference point** is active when you turn on the device.

***

### What the Reference Point Does

When LX1 captures a point, the measurement is anchored from the **active reference point**, not the centre of the device.

This ensures features such as doors, windows, wardrobes/closets and stairs are positioned accurately within the floor plan.

The reference point applies whenever LX1 records a pause point during measurement.

***

### When You May Change the Reference Point

In most room measurements, the reference point can remain the same throughout the process.

The reference point becomes important when capturing **features where both sides must be recorded**, such as doors, windows, or stair openings.

You may switch the reference point when capturing **opposite sides of a feature**.

Examples include:

* **Doors** – capturing the right side of the door frame and then switching the reference point while moving to capture the left side
* **Windows** – capturing each side of the window reveal
* **Stair openings** – capturing the edges of the stair opening or stair boundary
* **Wardrobes/Closets** – capture each side of the wardrobe opening 

***

### When You Do Not Need to Change It

During normal wall measurement, the reference point usually does **not** need to be changed.

For example:

* Measuring along walls
* Moving between wall planes
* Capturing standard wall positions

In these situations, the same reference point can remain active throughout the room.

***

### How to Change the Reference Point

By default, the **left reference point** is active when facing the buttons and LED.

To switch the reference point:

1. Press the **↔ arrow button (top button)**
2. The **LED indicator above the button** shows which point is active

Switching the reference point is instant and can be done at any time during measurement.

***

### Best Practice

Before capturing features or returning to a known reference point, briefly check which reference point is active.

Using the same point consistently helps maintain clean alignment throughout the floor plan.

***


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