---
title: "The magnifying glass picks the wrong points for a measurement"
slug: "why-does-the-magnifying-glass-picks-the-wrong-points-to-startend-a-measurement"
description: "When initiating a measurement, the magnifying glass selects points on an unexpected plane, making it hard to get the tight measurement."
tags: ["Measurement Accuracy", "Troubleshooting"]
updated: 2025-11-05T13:54:51Z
published: 2025-11-05T13:54:51Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.navvis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# The magnifying glass picks the wrong points to start/end a measurement

## **Issue description**

When initiating a measurement, the magnifying glass selects points on an unexpected plane, making it hard to get the tight measurement.

E.g. When starting or ending a measurement on this shelf the magnifying glass shows the Point cloud on the wrong shelf i.e. the shelf behind (wines) instead of the intended shelf (snacks) is showed.

![](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/why-does-the-magnifying-glass-picks-the-wrong-points-to-startend-a-measurement-image-kdle3y38.png)

### **Root cause**

The cause of this is the gaps between the 3D rendered points. When the magnifying glass is used, it displays the point cloud with the settings from the general point cloud mode. In general, the smaller the point size, the bigger are the gaps among them, and the likelihood your mouse pointer selects a point behind is higher

## **Troubleshooting Procedure**

To correct this, change the point size in the Perspective appearance for point clouds to for example 0.25 and try to perform the measurement again.

![](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/why-does-the-magnifying-glass-picks-the-wrong-points-to-startend-a-measurement-image-3gusjayn.png)

A three-dimensional representation of an environment, made up of many points. A point is defined by x, y and z coordinates, and it may or may not contain RGB, an intensity value, and normals.