Does this man want more than my help?

I think he may be looking for a bit more than the computer help. When you do go over to help, if you think the calibrating will take an hour to do, plan on another hour to stay. Give him and yourself some time to chat without the office setting. Casually you can let him know that you are interested or not. Let him know that you have other plans for that afternoon and cannot stay longer. Take a rain check for the lunch and/or dinner. Then you will see how soon it takes for him to ask you out. Hope it works if you are interested :)