Welcome
This site contains files and information related to the Time and Frequency Working Group of the Sistema Interamericano de Metrologia (SIM). It is designed so that participating laboratories can share information and view the results of interlaboratory comparisons.
The map below shows the location of the SIM laboratories that participate, or have requested to participate, in the SIM network. The light colored clocks are used to show the laboratories that already participate. The dark colored clocks show the laboratories that are expected to participate within the near future, as resources become available.
