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precIsIon rules
Precision rules, straight edges, Parallels
precIsIon steel rules AccurAcy
Starrett rules are made from fine quality steel and produced to the highest • All of our precision steel rules are photo-engraved
precision standards, making them the most accurate and readable precision • We inspect to Starrett Master Standards, which are
steel rules available. Through over 130 years of experience, we have developed traceable to the National Institute of Standards and
the following versatile features, designs and styles: Technology
our product lIne consIsts of: • Measuring Tip: When using a precision rule for very
• Full-flexible 1/64"-1/50" (0.4-0.5mm) thick close accuracy, the eye can read better by measuring
• Semi-flexible 1/50-1/40" (0.5-0.6mm) thick between two lines rather than from the end of the rule
to a line
• Spring-tempered 3/64" (1.2mm) thick
reAdAbIlIty feAtures
• Heavy spring-tempered 1/10" (2.5mm) thick • The numbering size and style is distinctive and more
• Stainless steel 1/64" or 3/64" (0.4 or 1.2mm) thick readable than ordinary rules
• Graduation styles are inch, millimeter, inch and millimeter, shrink, and • Advanced, staggered graduations- When reading lines,
special graduations it is much easier to count lines of differing lengths than
• All rules are photo-engraved and tempered for long life and flexibility those that resemble a comb. All Starrett graduations
are staggered in a height pattern that makes reading
easy. For reading very fine graduations such as 50ths
(.020") or 100ths (.010") of an inch, Starrett designed
an improved pattern of lines called "Aircraft Quick-
Reading Graduations" (see photo). The name stems
from its extreme popularity in aircraft plants and other
shops using decimals. This pattern is also used on
some of our millimeter rules.
• Quick-reading figures are furnished with finer
graduations for easier counting. Most all inch
Rule with Aircraft Quick-Reading Graduations on lower edge
graduations of 1/32" and finer have subdivisions
numbered (see photo).
• All rules are available in Starrett no-glare satin chrome
finish for easier reading and rust resistance
• There are still some old "D" style rules on the market.
These have one square and one rounded end. All
Starrett rules are ground square on both ends. This
provides better efficiency through the ability to read
Rule with Quick-Reading Graduations on both edges from either end on all edges.

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