This series was originally designed for the weight conscious world of NASCAR racing by using lightweight aluminum construction to reduce weight. The silver dial was added to make this series easy to read under harsh race conditions. Since it's introduction, the Ultra-Lite� series has fast become the hottest gauges in all forms of racing. From street machines to street rods, sport compacts to street trucks, enthusiasts in every market have picked up on this trend. You can find Ultra-Lite� gauges in any aftermarket gauge application. Don't be fooled by imitations. If you don't see the Auto Meter name, you wont get the race proven reliability and accuracy along with Made in America quality. We Offer the Ultra-Lite� series in 2-1/16 for race or custom street dash options. The mechanical gauges feature a rugged bourdon tube for quick response and accurate measurements. The electrical gauges include a rugged air core meter movement for maximum accuracy and quick response time. These are easy to install and also very dependable. The Full Sweep electrical gauge series from Auto Meter sets a new standard in gauge accuracy. The increased sweep makes quick glance viewing easy while the transducer is the most accurate sender available. Sizes: 2-5/8 (mechanical, electrical, full sweep electrical) 2-1/16 (mechanical, electrical, and full sweep electrical).