Abstract: A safety strobe light may include a modular design incorporating a body portion, a removable lamp or LED, and a removable means for attachment of the safety strobe light to a boom truck arm. The body portion may be constructed and arranged to house at least a portion of the lamp and means for attachment. The body portion may define a channel constructed and arranged to temporarily and removably attach to an attachment and removal tool attached to a hot stick or similar extension pole. The attachment and removal tool may be constructed and arranged to engage with the channel defined by the body portion, such that safety strobe lights may be attached to and removed from surfaces and objects (such as a boom truck arm).

Abstract: A test fixture for collecting particulate matter carried in the exhaust gas stream of an engine has a pair of coaxially aligned mounting plates, each having a filter cartridge holder mounted thereon. One of the mounting plates is moveable with respect to the other along a predefined longitudinal axis of the test fixture between an open position, whereat a filter cartridge is easily placed or removed, and a closed position at which a filter media mounted in the filter cartridge is sealed during a prescribed test sequence. An actuator mounted on a third coaxially aligned mounting plate has an extendable rod connected to the second mounting plate to effect movement of the second mounting plate between the open an closed positions.