General description Sealey Digital Brake Disc & Drum Caliper 300mm/12" is designed for precise measurement of disc thickness (external) and small to medium-sized drums (internal). It features a hardened and tempered stainless steel gauge for durability and accuracy. Technical specifications Range: 0-300mm (0-12") Battery: SR44 - 1.5V Nett Weight: 0.94kg Model No.: VS0567 High figures in LCD display: 11mm for ease of reading Other information Supplied with calibration certificate and storage case