A charged particle beam apparatus obtains an image by detecting a generation signal inclusively indicative of secondary electrons generated from a specimen. In certain of the many embodiments, the hammer head may be established within certain dimensional constraints relative to other part of the tool, andor the apparatus may not comprise a nail pulling claw. Temperature and pressure sensors are connected to the outlet conduit and communicate with a central processing unit. The network communications state may relate to either a state of network congestion or a state of reduced regional radio communications quality. As a result, the performance of virtual machines, especially those operating with limited resources, is improved. The damping means includes at least one elastic member with proper stiffness and a damping coefficient and a rigid body providing mass and moment inertia effect.