Apparatus for packing a pack of boards, eg plaster board, for wrapping and then delivery to a site is disclosed. The electric double layer cell includes a separator and at least one first polarizable electrode and at least one second polarizable electrode. The assembled components form an assembly which reduces or restricts vibration or movement of the components in specific directions . Motor drive electronics are responsive to the motor position signal for controlling the motor for moving the test object. The invention further relates to a housing part for assembling a modular housing accommodating electronic parts and to a method of manufacturing such a housing part. A match for the tabulated TSID can be found in order to determine the SGID assigned to the DHCT before tuning any frequencies that correspond to second occurrences of any of the SGIDs.