Non-contact electronic level

A method of measuring a level, comprising the steps of:

• using a light source to irradiate a vial having a bubble therein;
• capturing an image of the bubble after the vial is irradiated by the light source;
• and
• converting the image of the bubble into an electronic level signal by comparing the centroid of the image of the bubble with a predetermined point.

A non-contact electronic level, comprising:

• a vial having an bubble;
• a photo sensor located at a position corresponding to the bubble at a fixed distance from the vial, the photo sensor capturing an image of the bubble;
• and
• an image processing unit electrically coupled to the photo sensor and converting the image of the bubble into an electronic level signal by comparing the centroid of the image of the bubble with a predetermined point.