“Raise” is the third tab in “Starship Equipment” window. If you have some Equipment Raise-Toolkit, you can use them to increase your weapon, shield, engine, armor or torpedo characteristics. You need 5 of them to try increase equipment stats.
Why try? Because the attempt may be unsuccessful. If it is successful, the parameters of the equipment improves slightly increase.
Use the drop down menus to sort the equipment by type and location.
Select any piece of equipment from the list on the left and you will see: basic parameter (white numbers) + added before improvement (green numbers) and the potential improvement for this type of equipment for a given quality (green numbers in parentheses). You can see it in the screenshot above.