Pi Tape brand Blue Easy to Read Precision Inside Diameter O-Ring Tapes are constructed of 1095 Spring Steel and are intended for use in low-light environments. They differ from our standard tapes by featuring a higher contrast facing of white lines and numerals on a dark blue background. They are delivered with a Calibration Report traceable to the National Institute of Standards and Technology.

The Blue Easy to Read tapes are best used for measuring diameters in low-light environments. They are not intended for use with chemicals or in corrosive environments.

Specialty sizes, widths and larger tapes are available upon request..


Inside Diameter O-Ring Tapes Blue Easy to Read Metric Purchase Options


**The standard width for these tapes is 1/4" gauge member X 1/2" Vernier section.


Diameter Range Blue Easy to Read Price Link
** 50 - 300mm I.D. ** RTM03EZ 250.00 Go to Product Page
** 100 - 300mm I.D. ** RTM1EZ 245.00 Go to Product Page
300 - 600mm I.D. RTM2EZ 270.00 Go to Product Page
600 - 900mm I.D. RTM3EZ 286.00 Go to Product Page
** 50 - 600mm I.D. ** RTM1SPEZ 429.00 Go to Product Page
300 - 900mm I.D. RTM2SPEZ 451.00 Go to Product Page
600 - 1200mm I.D. RTM3SPEZ 469.00 Go to Product Page
900 - 1200mm I.D. RTM4EZ 325.00 Go to Product Page
1200 - 1500mm I.D. RTM5EZ 336.00 Go to Product Page
1500 - 1800mm I.D. RTM6EZ 353.00 Go to Product Page