Precision tools, properly tested.
Independent reviews of borescopes, torque tools and precision fastening gear — judged against the inspection and torque standards used on the flight line.
Founded by a former aircraft technician with 20 years of hands-on experience.
Borescopes & Inspection Cameras
Engine, automotive and industrial inspection scopes — chosen the way an aircraft technician inspects a turbine.
- Best Automotive Borescopes
- Best Borescopes for Engine Inspection
- Best Articulating Borescopes
- Best Borescopes for iPhone
Torque Tools
Torque wrenches, screwdrivers and drivers — accuracy, calibration and value, tested against spec.
- Best Torque Screwdrivers
- Best Torque Wrenches for Cars
- Best Digital Torque Wrenches
- Best Inch-Pound Torque Wrenches
Aviation & Fastening
Safety-wire pliers, Cleco fasteners and torque seal — the flight-line fastening gear we know first-hand.
- Best Safety Wire Pliers
- Milbar Safety Wire Pliers Review
- How to Safety Wire (Lockwire) Correctly
- Best Cleco Fasteners & Kits
SK spent two decades maintaining and inspecting multiple fighter-aircraft variants for the Indian Air Force, with formal qualifications in aeronautical engineering (BAMEC) and aviation fuels & lubricants. GaugeGrade applies the same inspection and torque standards he used on the flight line to the tools everyday mechanics, DIYers and trades actually buy.
More about our testing →