2.1.1789 Part 4 Section 19.1, VML

a.   The standard indicates the unit systems used throughout VML, but does not specify their bounds.

Office has restrictions for each of the units used in the standard. 

The following table documents Office limits for each unit. Office also uses EMUs throughout VML as a valid unit system. Individual elements and attributes may impose further limits on any particular quantity based on its context.

Unit

Min

Max

EMU

-2147483644

2147483647

Pixels

-2147483648

2147483647

Inches

-2348

2348

Centimeters

-5965

5965

Millimeters

-59652

59652

Points

-169093

169093

Picas

-14091

14091