|Review the following questions to help
determine what borescope is the right one for the job.
- What is the smallest access hole size?
You need to determine what restrictions you have in inserting the
borescope into the area being inpected.
Does an access hole exist? If not, will one need to be made?
Is a Borescope inspection port or opening available on the engine or equipment you will
Typically the smaller the diameter, the more expensive and delicate the instrument
- How far in from where the borescope enters the
access point will do you need to go?
This determines the length of borescope or visual inspection device
you will need. Typically the longer the borescope the more expensive it becomes as well.
- Once inside the object being examined, will you
need to: (Viewing directions diagram)
Go around a corner or a minor bend? (requires a flexible unit)
Look forward? (Forward or 0 Degree viewing)
To the side? (90 Degree or side viewing)
Both Directions ( Rotating or articulating the tip)
Backward (120 Degree or retro Viewing angle)
Off angle? (Another angle between 0 and 120 degrees)
Most Rigid borescopes have a fixed direction of view, however they can be rotated about
Articulated Flexible Fiberscopes have a fixed direction of view, however can be
articulated at the tip to other angles provided there are not any constraints within the
cavity or physical area being inspected.
- What type of defect, anomaly or condition are you
trying to find by performing this visual inspection?
Will you have enough light with the lighting provided in the
borescope and it's light source or need an additional light source for viewing?
How small is the area of interest?
- How far away will the area of interest be from the
tip of the borescope?
Two considerations- Magnification and Focal range. Rigid Borescopes
have specifications of various focal lengths as do Flexible Borescopes. However with
flexible borescopes- images are formed with a bundle of very small (micron sized) fibers-
much like a computer screen has small dots aligned to create an image. So the farther away
from the tip you are looking, less fibers are used to create the image that you see. The
best image resolution is within the .200" (5mm) to 5.0" range (130mm) working
How much magnification will be needed if any? Most units we offer have 25X
magnification at the eyepiece.
- Will you need to record and document the inspection
by using a CCD video camera?
Documenting inspections can be quite important for future reference, insurance purposes, quality control to insure complete and proper inspections are performed by your employees
or any number of reasons. Both B/W (Black and White) and Color CCD cameras are available.