# Machine Master Data Machine Master Data (MMD) gives you the tools to describe your machine with metadata, enriching your analytics and providing customers and third-party tools with additional information. The MMD module consists of three parts: ### Dimensions Dimensions provide the framework for describing the properties of your machine. These could include physical properties (e.g. machine weight), capabilities (e.g. carrying capacity, actions per minute), or metadata (e.g. location, owner). ### Instances Instances store information relevant to a specific machine/set of machines. A Dimension defines the properties of the machine, and the instance stores the actual values. So for a Dimension that has properties "Load Capacity" and "Location", the instance might have values "3000kg" and "Munich". ### Things Things are the machines you use to feed data into the Senseforce platform. An instance can be applied to it's corresponding Thing to create a logical link between the two. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://manual.senseforce.io/manual/sf-platform/machine-master-data.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.