The lightest professional transit on the market! The ComPro's™ lid and base are constructed out of a lightweight composite material with the same internal components as the Brunton Standard Transit™, making it 1.2 ounces lighter. A great option for students or anyone looking to cut down on the weight of their field kit. Made in the USA in Riverton, Wyoming. Leather case is included. ComPro™ Transit Manuals and Videos Needle Balancing: If your main region of transit use will not be in the United States, your needle will need a special balance. Please visit the Needle Balancing Page to identify your main zone and select it below.