It seems the PDF file with the calibrated target for assessing cervical joint position error (JPE) that I've had available on this site for 6 years got corrupted, and shrank! It wasn't by a lot and was accurate enough, but I fixed it and you...

Many of you already have discovered this, but OPTP now carries a headlamp laser (see HERE) that can be used for JPE training. Amazon also carries a flashlight headband by NiteCore that has loops into which you can slide a laser (see above). The laser shown here...