Frequency Laser Standard in new form factor. It is now available in rack mount to make your laboratory ergonomics even better. This automatic laboratory device is designed to calibrate and compare He-Ne (632,8nm wavelength) lasers. We achieve the laser’s stability with help of reference frequencies. The frequencies are based on the transition of atomic iodine isotope vapour. This unique laboratory device with automatic absorption peaks detection system has the results output to a build-in VFD graphic display.