Milton 923 tire pressure gauge. Pencil pressure passenger tire gages are made using machined parts, unlike the competition. This durable plated brass tire gage provides accurate, long life with trouble free performance. This single head straight pencil pressure gage comes complete with a 4 side nylon indicator bar. Tire gage has a pressure range of 5-50 PSI or 40-350 kPa and includes a deflator valve. Always check tire pressure when tires are cold.