The result of a recent comparison of iodine-stabilized He-Ne lasers at
474 THz from the IMGC and the LMM is presented. After one week of mea
surements. the mean frequency difference between components d, e, f an
d g of the R (127) 11-5 transition of I-127(2) was found to be nu(LLMM
-1) - nu(IMGC5/7) = (-4,5 +/- 0,4) kHz. Parameters which affect the la
ser frequency were investigated on laser LMM-1.