where a side view of the implaced instrument is not available fig9 and 10 are the front and side elevation views of another embodiment of the present invention wherein the mounting plate 230 is fixedly attached to the side of the cylindrical shell 216 the embodiment of fig9 and 10 is applicable typically for mounting on a vertical surface where the vertical surface is in a plane paralell to the direction of the quick removal action described with reference to fig1 through 6 above the other features are identical to that which are described with respect to that earlier described embodiment in fig9 and 10 the cylindrical shell 216 is shown attached at the lower end of the shell to the mounting plate 230 as described earlier the mounting plate itself can be attached to the vertical member 240 by use of some appropriate adhesive such as double back adhesive tape though other means such as by screw fasteners may also be used to screw the mounting plate to the vertical member fig1 and 12 present a front and side view in elevation of another embodiment of the present invention showing a different mode of attachment of the mounting plate to the cylindrical shell in fig1 and 12 it can be seen that the mounting plate 330 is designed to attach to a basically horizontal surface such as a table top as represented by structure 340 of fig1 and 12 the other features of the shell 316 are similar to those described earlier one difference here is that no provision is provided for the easy removal of accumulated residue in the bottom of the shell 320 attachment of the shell 316 to the mounting plate 330 is made by bonding the two pieces together at the.