A gooseneck frame is attached to the forward ends of a pair of lift arms which extend forwardly from a vehicle such as a skid steer vehicle with the forward end of the gooseneck frame being secured to the forward end of a silt fence installing machine so that the silt fence installing machine is pulled through the ground in advance of the vehicle. A mouth at an end of the housing provides for an insertion and locking of push buttons of the cover, an interior of the housing is provided with dials, a tumbler, and an indicator assembly, and the indicator assembly includes a switch and an indicator. Thereby, a reduction in the durability of the flexible sleeve member can be suppressed. The image is automatically processed with the handheld device to extract the unique identifier from the image. All groups moves along the optical axis upon zooming from a wide-angle end to a telephoto end. A cover caps the machine replaceable plug and nib to provide additional sealing and protection of that end of the vessel during transportation.