Are you missing the zoom controls from the old Google Maps interface for the desktop? Mouse over the “-” or “+” button at the bottom of the Google Maps page and click “show slider”. You’ll get the old zoom slider which allows you to quickly control the zoom level of the map.
If you want to go back to the default interface, mouse over the “-” or “+” button and click “hide slider”. The nice thing is that Google remembers your preference.
Google Operating System