In cases such as this, I have found the FindChildren activity quite useful. Depending on the amount of data you wish to scrape it can be used to grab the entire dataset based on correlated attributes of elements between the two tables. It works by taking the full HTML of the web page, then you can filter for those elements which share the same attributes. So if you filtered by < colname=‘machine name’ > then you could arrive at all the details in Machine Name across all tables through a single activity.
This might be of some help