From their announcement:
We’ve had our DBx gauge set available in wood for years now…
We thought some variety was in order and now have a basic set available in fluorescent green acrylic for your gaming pleasure. This set includes 1 1-inch linear gauge, 1 40mm-increment linear gauge and 1 notch gauge (with 2, 3 and 4 inch sides as well as a 40mm side).
We also have the fluorescent green “Notch” available separately.