The four gauges are the four aspects of your business that you need to keep track of in order to ensure its success. They are:
1. Revenue: This is how much money your business is bringing in. You need to know this so that you can see whether or not your business is profitable.
2. Expenses: This is how much money your business is spending. You need to know this so that you can see where your money is going and whether or not your business is sustainable.
3. Assets: This is what your business owns. You need to know this so that you can see what your business has to work with and how it can grow in the future.
4. Liabilities: This is what your business owes. You need to know this so that you can see where your money needs to go and how quickly you need to pay it back.