They are designed to fit a 52mm (2") hole in a dashboard. The gauges are in excellent condition having been in dry storage for many years.
Universal 2" 52mm 100PSI Digital LED Oil Press Pressure Gauge & Sensor Meter Kit
Smiths New 52mm Fuel Gauge (BF2234-00)
Mini Classic Kit Car Dual Gauge Dash Mounting Bracket Smiths 2" 52mm Oil Water
