#include <Servo.h> //library

Servo myservo;  // servo objects
Servo myservo2;

int potpin = A0;  // analog pin used to connect the potentiometer
int val = 0;    // variable to read the value from the analog pin

void setup() {
  myservo.attach(6);  // attaches the servo 
  myservo2.attach(7);
}

void loop() {
  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
  val = map(val, 0, 1023, 0, 180);     // reduce it for use with the servo (value between 0 and 180)
  myservo.write(val);
  myservo2.write(val);                  // sets the servo position according to the scaled value
  delay(15);                           // waits for the servo to get there
}