Asimeto 7307563 0-6" x 0.0005" Absolute Digital Caliper. The caliper will be ready for measurements as soon as it is switched on with the LCD screen displaying the actual slider position. There is no need to set the zero position each time the caliper is used as the origin setting is retained even when the caliper is switched off. A thumb wheel is provided for ease of use. Inch/Metric conversion.