Wait! If you're going to search Google for a better price - give us a shot first. Call us at 410.620.3020 and lets see if we can get you a better deal on this product.
The 81139 is inexpensive, portable, and very accurate. It has a simple leveling adjustment of +/-3°. Housed in a durable, non-magnetic casing with a magnetic head that attaches firmly to rotors or spindles. REPLACEMENT BUBBLE VIAL #81134 REPALCEMENT MAGNET #81133 Installation Instructions