Dual axis analog inclinometers. Other models are available. Model shown is model #25SDA. Side to side tilt reads from 25-0-25 degrees. Fore/aft tilt reads 40-0-40 in degrees. Mounting bracket (included) required for proper mounting. Call or e-mail for OEM pricing. www.tiltmeter.com Phone: 816-587-9814 Fax 816-587-4294