The Campbell CS125 is a forward-scatter Visibility and Present Weather sensor. The visibility measurement range is 75 km and the present weather outputs 56 SYNOP present weather codes.

The Vaisala PWD family offers a range of visibility instruments. The PWD uses a optical forward scatter to measure the visibility with a range of 2000 meters for the PWD12 and 20 000 meters in the PWD22. The present weather is available in SYNOP code format.

The Biral SWS-200 visibility sensor uses the forward scatter optical principle to measure the visibility with a measurement range of 10 m to 20 000m. Present weather information is available presented with SYNOP codes.