Measurements for a Harness
A. From corner of mouth, over the poll, to the other corner of mouth.
C. Length of girth
D. Length of back from position of harness saddle to base of tail
E. Length of horse, from point of shoulder to buttock.
F. Height at withers.
Measurements for a Collar
G. Length from top to base of neck at proper position of collar. Line should be straight, not conforming to horse's body.
H. If possible, measure a collar which fits the horse, using the inside dimensions of the collar as shown.
How to Measure for a Harness or Collar