Engine Oil Dip Stick - Dip Stick Tube: Description and Operation
Version 1 Dipstick has red dipstick handle.
Version 2 Dipstick has fluorescent dipstick handle.
The dipstick also has a disc attached to the handle.
The text on the disc gives the difference in volume between the M markings: "Between Min/Max. 1.51 (0.4 US GAL)".