The bar screen of the present invention includes a bar rack and a cleaning rake. The target BS sends the serving BS a notification indicating that the MSS will change its connection. In order to accomplish this positioning, a few sample blanks are produced and measured first in a test run of the machine. It can be adjustable in size to fit a wide range of wearers, and can be adapted to carry many different types of items that are needed for work or recreation, by a combination of built-in pockets and other built-in carriers and optional modular receptacles that can be detachably mounted on the straps of the strapvest. The third housing is disposed on the other side of the rotating shaft and covers the rotating shaft and the second housing.