The WA-1500 Wavemeter system is the industry s leading laser wavelength meter,
measuring the absolute wavelength of virtually any CW laser to the highest accuracy available, +/- 0.2 ppm (+/- 0.0002 nm at 1000 nm). When the highest accuracy is not required, the WA-1000 is available as a lower-cost alternative, providing an absolute wavelength accuracy of +/- 1.0 ppm (+/- 0.001 nm at 1000 nm).