Abstract: A nursing device, as disclosed, includes a tubular container adapted for holding a liquid having a top end, a bottom end, and a longitudinal axis, wherein the container has a symmetrical, cross-sectional area substantially along the longitudinal axis. The nursing device also includes a nipple attached to the top end of the container and directional marker on the surface of the container for orienting the tubular container. The nursing device further includes a plurality of point markers located on the surface of the tubular container in space relationship from the top end of the tubular container and perpendicular to a plane formed by the longitudinal axis and directional marker.

Abstract: A device useful in the feeding of infants is provided which includes an at least partially transparent or transluscent container having an open mouth centered on its longitudinal axis at its top end, and a nipple removably attached to the top end of the container so as to cover and protrude from the open mouth thereof. Graduated markings are provided on the container in spaced relation to the open mouth which are located, respectively, in selected sloping, non-parallel planes which are (1) normal to a first vertical plane containing the longitudinal axis of the container, (2) intersect at an acute angle a second vertical plane containing the longitudinal axis of the container and which is located normal to the first vertical plane, and (3) do not intersect each other within the volume defined by the container.