Model 920 Rat Adaptor

**Model 920 Rat Adaptor **includes a nose and tooth bar assembly offering various stereotaxic adjustments.

Dorsal/Ventral adjustment dial – Calibrated in 100 micron increments, 1 mm per revolution.

Dorsal/Ventral adjustment – 30 mm

Dorsal – 10 mm above ear bar zero

Ventral – 20 mm below ear bar zero

**Adaptor Plate A/P adjustment **– 44 mm

**Ear Bars **– Model 957 18° Tip Rat Ear Bars

(6.3 mm square with 35 mm of calibration).