The Moore & Wright 43 Reversible Base Depth Gauge has the following specification:
Size of Base: 18/56mm, 0.71/2.21in.Width: 5.5mm/0.22in.Thickness: 1.0mm/0.04in.Length of Blade: 195mm/7.68in.
Metric/Imperial Scale Graduations : Front Face: 1/32nd, Rear Face: 1.0mm.