TRANSFERRING A PRECISE VOLUME OF LIQUID A pipette bulb is used to draw liquid up into the pipette. There are many types of pipette bulbs. The use of 3 types will be demonstrated in this module. The first to be demonstrated will be the common rubber bulb.
Front blackout marker light. 1  Front marker lights are typically mounted below or to the side of the vehicles normal headlights. 2  Rear marker lights or blackout taillights are typically housed in the same unit as the vehicles taillights, and are the main tool in keeping the proper following distance in nighttime convoy driving.
Location. One red lamp and one red reflex reflector must be mounted on each side of the rear of all regulated vehicles. One amber lamp and one amber reflector are also required on each side of the front of all vehicles.Vehicles 30 feet or more in length must also have one amber lamp and one amber reflector located on each side, midway between the front and rear side markers.xceptions. Truck tractors do not have to be equipped with rear side marker lamps or reflectors. Additionally, trailers shorter than 6 feet, including the tongue, are not required to have front side marker lamps or reflectors.