Sample ions then pass through a small orifice skimmer into the ion-transfer region. These are used in conjunction with an approved main drain cover and skimmer. An immature flame skimmer (nymph) feeds mainly on aquatic insects. The first basket is placed closely after the skimmer mouth. Skimer.18, a Trojan that works like an ATM software skimmer. Less common variants included drag shovel, skimmer and pile driver. In particular, much attention has been given to the introduction of cone shaped skimmer units. The larvae of the globe skimmer, like all dragonflies, are predatory. The African skimmer ("Rhyncops flavirostris") nests in the banks of Central Island. The PIN harvesting can be performed with a chip skimmer. There are many different types of oil skimmer. The naval version was test fired as a sea skimmer in 2002. "Hang Glider Weekly" and "Ground Skimmer" in 1972 and "Glider Rider" in 1975. It is important to understand the design features before employing a particular skimmer type. Netezza introduced a scaled-down version of this appliance under the Skimmer brand in January 2010.