Alan Browne Services
Alan Browne Gauges is a UKAS calibration accredited laboratory (Lab No 0155) offering a manufacturing, calibration, replacement, measurement, servicing and repair facility. Inaugurated in Leamington Spa in 1961 by the founder Alan Browne, with its permanent on site temperature controlled calibration laboratory, it quickly grew to become one of the most highly regarded laboratories in the world.
Custom Lapping
The custom lapping capability provides the ability to manufacture a range of products across the whole spectrum of manufacturing from automotive, aerospace, pharmaceutical, media, and others. The size limit is dependant upon the degree of accuracy required, up to 350mm is available, with up to 150 mm diameter for the sub micron accuracy in flatness and parallelism. This service does also include re-lapping and reconditioning of calibration platens.
Calibration by Comparison
UKAS accredited to Class B & C by comparison Range of calibration services:
- Calibrate length
- Calibrate length and variation
- Minimal lap, calibrate length
- Minimal lap, calibrate length and variation
- All materials steel, tungsten carbide and ceramic
Comparison
Class B: uncertainties apply to the measurement of length of gauge blocks, by comparison with grade K standards of length of a similar material, of grade 0 to BS EN ISO 3650:1999 and BS 4311:part 1:1993.
Class C: uncertainties apply to the measurement of length of gauge blocks, by comparison with grade K standards of length of a similar material, of grades 0,1, and 2 to BS EN ISO 3650:1999 and BS311:Part 3:1993.
Class D and E: uncertainties are the maximum applicable to the measurement of length of grade 3 and grade 4 gauges respectively to BS4311:Part 3:1993, by comparison with grade K standards of length of a similar material.
Class C, D and E: uncertainties also apply to the measurement of length of tungsten carbide gauge blocks up to a length of 25mm/1 inch, by comparison with grade K steel standards.
Interferometry - the UKs Prime Source to Class A
Class A uncertainties apply to the measurement of length by interferometry of grade K gauge blocks to BS EN ISO:3650:1999 when they are measured twice, wrung to a platen by each of the two measuring faces in turn, and the mean of these two measurements stated on the certificate. Calibration of Grades 00 and K to Class A interferometry
Warranty
All new sets of DuraGrade steel gauge blocks in Grades 0, 1 and 2 carry the two year DuraGrade warranty
“We will replace free of charge any gauge block in a DuraGrade set if recalibration in our laboratory, within 2 years of the date of supply, shows that the central length deviation of the gauge no longer complies with the original grade of the set.”
