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 Replica 52mm 2 1/16" Volt Gauge+Oil pressure gauge Mechanical 1/8" NPT BC
Smiths new 52mm Air Pressure Dual Gauge 0-9kg/cm2
Smiths Replica 52mm 2 1/16" Gauges Kit - Temp + Oil + Fuel + Volt Gauge BC
AUSTIN A40 FARINA Mk1 (1958-1961) SMITHS NOS 80MPH SPEEDOMETER (SN4751/00 1600)
TRIUMPH GENUINE SMITHS NOS 2 INCH GAUGES BRASS SECURING NUTS & INSULATORS x 10
