The Proportional Divider is not your average perspective tool! It is perfect for artists who frequently paint or draw from a reference that requires size reduction or enlargement. Its durable, aluminum construction ensures that artists will be enjoying the Proportional Divider's incredible accuracy for years to come. Due to its convenient, small size of 7 3/4", The Proportional Divider is a great tool for en plein air and artists on the go. Architects and drafters can also benefit from using the Proportional Divider -- even when drafting fractional lengths by hand! This career defining tool is made in Germany and includes a protective carrying case. If you're an artist searching for a tool to elevate your portraits, landscapes and other artistic subjects to perfect accuracy, the Proportional Divider is the tool for you!