3. The device of claim 1 further comprising at least one second I-beam, the number of said second I-beams greater than one being equal to the number of said second cylinders greater than two, said second I-beam surrounding said second axle, said second I-beam positioned adjacent said end of said second cylinder opposite said operator dial, said second I-beam having spacers of narrow width disposed along its sides and coincident with said rim of said second cylinder opposite said operator dial, said spacers being disposed so that said second cylinder and said operator dial are compressed together so that they are secured to each other, but would no longer be secured to each other if said second I-beam is displaced a small distance.
4. The device of claim 3 further comprising a case member, said case member attached to said first I-beam and said second I-beam so that upon displacement of said case member, said first I-beam and said second I-beam are displaced.