Alternate unit of measure

Hi Gurus,

Please help to resolve the below issue.

We are purchasing the sheet in meters / roll and want sell it in Pieces. We will cut the sheet, based on the customer requirement

For example

2M Width x 2M Breadth x 5M Length - 2 Pieces

2M Width x 2M Breadth x 7M Length - 5 Pieces

How I can maintain this in alternate unit of measure. or I need to create a new material master.

Please suggest.

Thanks in advance.

Best Regards

Saravanan S