---
title: "Get the mass properties for the assembly."
method: GET
path: "/assemblies/d/{did}/{wvm}/{wvmid}/e/{eid}/massproperties"
tags: ["Assembly"]
---

# Get the mass properties for the assembly.

`GET /assemblies/d/{did}/{wvm}/{wvmid}/e/{eid}/massproperties`

The assembly must contain parts that have density. The returned schema includes the same information as in the Onshape [Mass Properties Tool](https://cad.onshape.com/help/Content/massprops-asmb.htm). 
When three values are returned: 
 * The first is the calculated value. 
 * The second is the minimum possible value, considering tolerance. 
 * The third is the maximum possible value, considering tolerance.

## Path parameters

- `did` string, required
- `wvm` 'w' | 'v' | 'm', required
- `wvmid` string, required
- `eid` string, required

## Query parameters

- `linkDocumentId` string
- `configuration` string

## Response `default`

default response

---

[API](https://skmtc.net/onshape/apis/onshape-rest-api.md) · [All operations](https://skmtc.net/onshape/apis/onshape-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/onshape/onshape-rest-api/revisions/aaa3e1322450/schema)