Legal Metrology, Primary Calibration and Interferometry explained:
Equipment which sets the world’s length measurement standards in laboratories undertaking Primary and Legal Metrology work. Here we tell you about how our products relate to "legal metrology". . . . . .

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The GBI300 sets the standard throughout the World in Gage Block Measurement by Interferometry. Over 25 Primary Calibration Laboratories in Europe, North and South America and Asia rely on NPL-Brown & Sharpe Gage Block Interferometers for their . . . . .

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The LBI1.5 was designed by the UK NPL to meet the requirement for calibrating longer type Length Standards at a Primary level and with the best possible Measurement Uncertainty.  Long Series Gage Blocks and Length Bars in lengths up to 1.5 meters (60") can be . . . . .

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The LBE is designed to meet the needs of Legal and other measurement laboratories that need to calibrate instruments over long distances such as up to 50 meters (150 feet). . . . . .

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Spectrum is a range of Frequency Stabilized Lasers offering the user the choice of different laser wavelengths. Users of specialised Interferometry will find Spectrum lasers provide the variety and flexibility they need. Spectrum Lasers are a key element in the . . . .

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In the 1990s the NPL-Tesa Automatic Gauge Block Interferometer (AGI) was the instrument that set much of the World’s measurement standards. Now B&S has introduced the GBI300, an improved version of the GBI resulting from recent developments . . . . .

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