The VJ-4 Far Focus from ViewTech Borescopes is a Borescope with Depth of Field(DOF) 50 mm to Infinity, Viewing Angle 80 Degree, Operating Temperature -20 to 50 Degree C, Storage Temperature -20 to 70 Degree C, Probe / Insertion Tube Diameter 6 mm. More details for VJ-4 Far Focus can be seen below.
