---
title: "Basic Tutorial | Comparison & Inspection"
slug: "cyclone-3dr-comparison-and-inspection"
updated: 2026-08-06T10:13:28Z
published: 2026-09-07T11:52:00Z
canonical: "rcdocs.leica-geosystems.com/cyclone-3dr-comparison-and-inspection"
---

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

# Basic Tutorial | Comparison & Inspection

Quite often you need to compare two objects in order to:

- Inspect your measure with the reference CAD.
- Compare the created model with the original point cloud.
- Check the position of your scan.
- Etc.

In the software you can compare:

- A cloud with a mesh or a surface or a geometric feature.
- A cloud with another cloud.
- A mesh with another mesh, a surface or a geometric feature.
- A polyline with another polyline.
- A set of polylines with another set of polylines.

You can compute inspections only between 2 objects (you can use commands [Merge Clouds](/v1/docs/cyclone-3dr-mergecloudsc), [Group Mesh](/v1/docs/cyclone-3dr-groupmeshc) or [Group CAD](/v1/docs/cyclone-3dr-groupcadc) (if you want to group several objects).

The one selected first is the “Reference” and the other one is the “Measure”.

Once the inspection is done, you may compute [Statistics](/v1/docs/cyclone-3dr-statisticsc) to get more information about it.

- [Basic Tutorial | Compute inspection between a surface and a cloud](/v1/docs/cyclone-3dr-excompute-inspection-between-a-surface-and-a-cloud)
- [Basic Tutorial | Compute inspection between polylines](/v1/docs/cyclone-3dr-exercise-compute-inspection-between-polylines)