About galvanometer?PLs help...?

I need to know what the deflection of the galvanometer's needle shows? I mean...it shows the direction of current or the flow of electrons?

A galvanometer is a type of ammeter — an instrument for detecting and measuring electric current. It is an electromechanical transducer that produces a rotary deflection, through a limited arc, in response to electric current flowing through its coil. The name galvanometer has been applied to devices used in measuring, recording, and positioning equipment.

When a direct current (DC) flows through the coil, the coil generates a magnetic field. This field acts with or against the permanent magnet. The coil pivots, pushing against the spring, and moving the pointer. The hand points at a scale indicating the electric current. A useful meter generally contains some provision for damping the mechanical resonance of the moving coil and pointer so that the pointer position smoothly tracks the current without excess vibration.
It shows the voltage (potential difference) between anode and cathode of your galvanic cell.
Straightforward enough, the deflection of the needle in a galvanometer refers to the direction of current passing through it. A deflection to the right suggests a positive current and a deflection to the left, on the other hand, reflects a negative current.

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