The exact dimensions from the catheter tip to the end of the casing (which houses the sensor) for each is below:
Length: 1.951 +/- 0.127mm
Length: 3.4766 +/- 0.1524 mm
Diameter: 0.635 mm
Figure 1: Example of three Mikro-Tip pressure catheters indicating the casing (black bar) and the H-ball housing (red bar).