The MicroRigid GenScope Borescopes from GenScope is a Borescope with Field of View(FOV) 50 Degree, Probe / Insertion Tube Diameter 1.3 to 3 mm, Probe / Insertion Tube Length 2.9 to 6.5 Inches, Probe / Insertion Tube Length 75 to 165 mm. More details for MicroRigid GenScope Borescopes can be seen below.