Lcd backlight screen two see thé centers of stud. Detects wood metal spigot up two 38mm. Runs on 1 x 9v battery groove included . Auto calibration. Centers finds. Marking channel two mark thé centers of thé stud. Audible sound two sometimes delicate stud centers spirit ac live Brand: Stanley Shipping Cost: 39,00 kr. Delivery Time: 2-12 hverdage