Moore & Wright Combination Length Bar Sets are made from the same high grade steel as the gauge blocks. Moore & Wright Length bars and gauge blocks are among the most commonly used standards for maintaining precision and traceability in dimensional metrology. These length bars are manufactured to BS 1790 (Imperial) and BS 5317 (Metric). The Moore & Wright Combination bars have a round section which are hardened to 64Rc and are precision lapped for higher accuracy. Reference and calibration length bars are produced with plain ends and Inspection and Workshop grades have internal threaded holes in their end faces. This helps with the assembly of a combination of bars. A number of standard sets are available as well as individual sizes.

Moore & Wright Combination Length Bar Sets are highly regarded as the standard for calibrating or verifying the performance of various Coordinate Measuring Machines (CMM), bench center, precision comparator, height gauge, and many more. These precision block can cover the length range up to 775mm with calibration uncertainties as small as 100 nm. Many end-user of these block are calibration lab and QC inspection department which oftenly use it for periodical precision comparator with ISO 3650 standard or various brands of Interferometer to measure length standards at the highest level of accuracy.

Your investment on Moore & Wright Combination Length Bar Sets, will allow you to measure extended lenght when combined with the connection screws for a secure lengths far in excess of that of standard gauge blocks. The internal threaded holes in their end faces allows for screws application used on horizontal position as well as vertical for height gauge comparator or simply for attachement of  improvised range of accessories.

Moore & Wright Combination Length Bar Sets Features:

• Affordable alternative for in-house calibration of CMM instrument.
• Excellent wringability due to micro polished surfaces (lapped) for finest surface, absolute accuracy and exactness.
• Internal threaded holes in their end faces allows improvised application or attachment.
  
• All set of lenght bar are well-hardened to 64Rc for durable application and minimal influence of temperature changes.
  
• Accurate at 68 °F (20 °C) and should be kept at this temperature when taking measurements, to avoid the effects of thermal expansion (Coefficient of Thermal Expansion: 11 ±1 x 10-6 per °C ).