Note the buffering has been updated to look more like a standard tailpiece. Custom measurements are in inches and should be made with a flexible ruler following the path of the existing cable from the back of the endpin collar, around the saddle and then measured to the specified place. Measure A: measure from the back of the endpin collar to the top edge of the saddle. Measure B: measure from the back of the endpin collar to the top of the bridge.