If you are adding to an existing
Track System it is easy to Identify which of our 3 systems you
have. H Type will have 3 copper contacts on the track heads and
in the track. Differentiating between L Type and J Type is a
little more difficult. A J Type Head will have 2 contacts. You
should be able to lift one of these contacts up and down fairly
easily. Below you will find measurements to assist you in identifying
which system you have.