/ Precision Measuring Tools / Gage Blocks / Standard Reference Bars / RBCM 300. * Not actual product image RBCM 300. Standard Reference Bar #(--edpnumber)# Standard Reference Bars 300 mm Reference Bar - With Channel Design These Standard Reference Bars are invaluable for use in checking table movement of machine tools, accuracy of vernier height gages, surface plate transfer measurement, and for final inspection of precision machine tools and coordinate measuring machines. The "channel design" places additional measuring pads at appropriate points over the length of the bar as reference points for x, y or z axis measurements. Channel design permits use of the bar on its base (vertical), or on its back, or either side (horizontal). The alternating gage block jaws and spacer blocks are permanently wrung and fastened together to form 25mm increments. A special bushing arrangement allows the master stack to conform to thermal conditions prevailing during use, thus providing a true master even under less than perfect laboratory conditions. Mating surfaces are treated during assembly to prevent corrosion. Non-standard lengths and measuring increments are available on special order. Features Specifications Product Testimonials Other similar products RB 10. Standard Reference Bar RB 12. Standard Reference Bar RB 18. Standard Reference Bar RB 8. Standard Reference Bar RBC 12. Standard Reference Bar RBC 19. Standard Reference Bar RBC 25. Standard Reference Bar RBC 37. Standard Reference Bar RBC 49. Standard Reference Bar RBCM 1250. Standard Reference Bar RBCM 300. Standard Reference Bar RBCM 500. Standard Reference Bar RBCM 650. Standard Reference Bar RBCM 950. Standard Reference Bar RBM 200. Standard Reference Bar RBM 250. Standard Reference Bar RBM 300. Standard Reference Bar RBM 450. Standard Reference Bar Contact Starrett Features With Channel Certificate of Calibration included Furnished in a storage case Specifications Type: With Channel Design Size: 300 mm Unit Of Measure: Metric System Tolerance (Stack) Max: .0025L + .25L in millimeters Tolerance (Stack) Min: - .25 Parallelism: 0.4µm Uncertainy of Calibration: .25 + .002L in millimeters expressed in µm. Product Testimonials Write a product review Write a product review Comments* First Name* Last Name* Email* Occupation The information you provide will be used in accordance with the terms of our privacy policy. I agree to the privacy policy. Please provide the required information. Thank you for submitting a product testimonial on www.starrett.com. By submitting information to Starrett, you acknowledge and give express permission for the L.S. Starrett Company to use and share your statements.