Specifications

Crestron Programming Design Kit
Doc. 5277J | crestron.com
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List of Typography Design Recommendations
The designer, based on the type, usage, and criticality, should carefully evaluate each of the following
recommendations.
• Sans-serif fonts are usually more legible than fonts with serifs.
• Avoid using a font that has characters that are too similar to one another, as this will reduce the legibility of
the print.
• Long chunks of text should be set in lower case.
• If upper case is required, the first letter of the word should be made larger in order to enhance the legibility
of the word. When specifying font height, or accessing graphs to determine the size of a lower-case
character, the distinction between “x” height and overall size should be made.
• As a general recommendation, the “x” height of a font used for important flightdeck documentation should
not be below 0.10 inch.
• The recommended height-to-width ratio of a font that is viewed in front of the observer is 5:3.
• The vertical spacing between lines should not be smaller than 25-33% of the overall size of the font.
• The horizontal spacing between characters should be 25% of the overall size and not less than one stroke
width.
• Avoid using long strings of text set in italics.
• Use primarily one or two typefaces for emphasis.
• Avoid using black over dark red, green, and blue.
Acknowledgements
The original work for the typography recommendations was NASA CONTRACTOR REPORT # 177605 “ON THE
TYPOGRAPHY OF FLIGHT-DECK DOCUMENTATION” by ASAF DEGANI, and supported by NASA research grant
No. NCC2-327 from the Ames Research Center to the San Jose State University and grant No. NCC2-377 to the
University of Miami.
Further Inquiries
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calling Crestron corporate headquarters at 1-888-CRESTRON (1-888-273-7876).
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