The CryENGINE 3 uses a metric scale to represent objects, distance, and size. It is important to keep this in mind when making photo-realistic assets. To make objects accurate to real-world measurements the unit setup in your DCC package must be set up to match the scale in the engine.
To prepare yourself for modeling objects for use in CryENGINE, 3ds Studio Max must be open.
Different game engines use a different scale to represent objects; in our case let's set up our 3ds Max application to work with CryENGINE 3:
Along the top menu bar of 3ds locate Customize. Click it and select Units Setup from the list.
In Unit Setup, change the Display Unit Scale to Metric Meters.
Next, click System Unit Setup.
From here change your System Unit Scale to 1 Unit = 1.0 Centimeters.
Click OK to go back into your 3DS Scene.