void setup(){
  pinMode(2, OUTPUT);
  pinMode(4, INPUT);
  Serial.begin(9600);}




void loop() {
  digitalWrite(2, LOW);
  delayMicroseconds(4);
  digitalWrite(2,HIGH);
  delayMicroseconds(10);
  digitalWrite(2, LOW);
 
 
 
 
  long t=pulseIn(4,HIGH);
  long inches=t/74/2;
  long cm=t/29/2;
  String inch="inches t";
  String CM="cm";


  
  Serial.print(inches+inch);
  Serial.println(cm+CM);
  Serial.println();
  delay(1000);
}