You can setup items to be sold in decimal quantities such as 1.50 meters.

Allow decimal values to the product quantity field to allow users to order item less than a full unit :

1. Open your shop in ShopFactory 

2. Select the Product in your shop where you would like to allow decimal quantity to be entered -> click EDIT PRODUCT

3. Select "Properties" button

4. Under Product Properties 2, tick "Allow decimal quantities such as 1.5" checkbox as shown below:

- You can also select a QUANTITY UNIT for this product i.e. m for meters

5. Click Ok to apply the change to that Product.

6. Save and publish your shop.