I was trying to tune(standard tuning) my acoustic guitar with a digital tuner that captures the playing through a microphone and shows the note/frequency played on its LED screen. 

I was completely focused on getting the notes right that I forgot I was increasing the tension in the strings which eventually made the bridge come off.

![enter image description here](https://i.stack.imgur.com/0PvP7.jpg)

Where did I go wrong?