The easiest way to measure for a new collar, is to use the existing one. Most collars are either a buckle connection, or a quick release connection. Both of these are measured slightly differently, and just require a tape measure or ruler.
To measure an existing buckle connection accurately, measure from the inside of the buckle (where the tongue hits the buckle) to the usual hole that is used. In the example below, the usual hole is circled in red, so the measurement is approximately 34cm.
Quick Release Connection
To measure an existing Quick Release (or Side Release) buckle accurately, measure from the base of the prongs to the end of the other piece. In the example below, the measurement is approximately 37cm.
If you have any questions when measuring for your new collar, please contact us.