Below you can see the old logo, dated and lacking in professional expectations.
The client had decided this needed updating, along with new design for all their stationary.
Here are 3 versions I proposed (the middle one being the chosen logo):
The idea behind the new logo was to highlight the companies beliefs in precision and accuracy as well as clean cut professionalism.
The C & A were used in 'Futura' typeface to build the mark and have been combined to create the shape of a microscope, the main tool used in their work.
Here is the final logo shown in two forms. This was before the client had decided on a final name, it was a toss between the two below. Obviously the upper of the two was eventually chosen.