Tech Tools Visual Inspection Cylinder Thread Viewer


The Cylinder Thread Viewer assists you with inspecting cylinder threads in all types of cylinders.  It uses a threaded index plate for stability, a laser to pinpoint issues, and an 8-hour rechargeable battery.


Please call (877) 837-7637 to confirm availability

SKU: 530-9004 Category:

Product Description


Thread Viewer is a tool to help the inspector view a cylinder’s threads. Many inspectors use light and mirrors to inspect the threads of a cylinder. This procedure has been used for a long period of time but takes dedication and practice to master the techniques. Using light and mirror can also be problematic for people with diminishing eyesight. The Cylinder Thread Viewer helps the inspector by clarifying, magnifyingmodifying, and simplifying the inspection process. This is all accomplished using a laser on an index plate, rechargeable batteries, Glass lenses, and interchangeable mirror tube sizes.  


The clarity of the threads is very important during the cylinder inspection process. The cylinder thread viewer uses an internal white LED light to shine into the peaks and valleys of the threads. The intensity of the LED light can be adjusted using the front Off/On knob. As the knob is turned on, the intensity of the light increases. If the light becomes too intense, the knob can be adjusted down, giving the inspector a customized view of the threads. The clarity of the threads can be focused, using the adjustable focus tube. The user can adjust the view based on their personal vision needs.  

Magnify (1X)

Looking through the focus tube, the Cylinder Thread Viewer uses high-quality Glass optics. The custom optics were designed and produced by a high-end optics company. The mirror used has no magnification (1X) However, as the user adjusts the LED white light, and moves the focusing tube for a clear view, the glass optics bring out the threads in a crisp clear picture Similar to wearing reading glasses to clear up the vision when something is closer to the eye. 


Due to the design of the optics and focal lengths, as you move the Cylinder Thread Viewer deeper into the threads, and into the interior of the cylinder, the inspector can view the underside of the cylinder crown region. As you move the viewer, you can continually adjust the focus. The mirror and optics have a field of view of 2 inches / 5 centimeters. This focusing ability and the brightness of the light allow the inspector to see the underside of the crown, checking for possible cracks or excessive corrosion.  

The Cylinder Thread Viewer also can change the diameter of the mirror tube. Two tube sizes can be added to the system. One has a diameter of ¾” / 2cm and one goes as small as ½” / 1.25cm. the inspector can choose the best mirror size for the cylinder they are inspecting.  


To use the Cylinder Thread Viewer the inspector chooses the size of the mirror tube, places an index plate on the top of the cylinder, turns the viewer on, and screws the threaded mirror tube into the index plate. The Index plate ensures the mirror tube is stabilized. The index plate threading has been custom designed, to use the least amount of rotations while still allowing multiple passes of the threads while viewing through the mirror. The inspector can remain in one position, the cylinder remains in one position, and the only thing that turns is the Cylinder Thread Viewer.  

To help identify areas of concern, the Cylinder Thread Viewer has a custom label on the index plate and an internal laser guiding system. The index plate has a point, which is set at a specific location on the cylinder. For example, the point can be placed on the first letter/number of the serial number. That becomes the “O” point. As the unit is rotated the laser tracks along with the index plate. When something is noticed by the inspector, they look at the index plate and record the number on which the laser lands. That allows them to locate the same location when re-assessing the cylinder threads or crown.  

 This is an excellent tool when identifying the difference between a tap Stop mark and a crack. Review the latest Cylinder Training Services.  

One of the greatest simplification tools added to the Cylinder Thread Viewer is the rechargeable battery. Using a USB-C charging cable you can rapidly charge the unit for 8 hours of continued use. No need to take the unit apart and find batteries for replacement. Simply charge and use. If it is accidentally left on, conduct a quick re-charge to continue with the inspection process.  

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Free Shipping Terms and Conditions:

  • Applies to orders greater than $100.00 on selected items. (Does not apply to tanks, weights or other oversize items)
  • Applies to UPS GROUND shipping rates only, within the Continental United States. Expedited shipping requests will be charged at applicable shipping rates.
  • Available only to the Continental United States.
  • Refunds for shipping on any returned items will be deducted by the amount charged for the non free shipped items only on the original order.
  • Valid with gift certificates & promotions.
  • We reserve the right to modify or cancel free shipping at any time.

Full Return Policy For Saguaro Products

New Product Returns: Your purchase can be returned within 90 days for a hassle-free exchange or refund provided that the merchandise is in its original saleable condition, in original packaging, and with the original receipt. Returns without the original receipt will be made at Saguaro Scuba Inc.’s discretion. Buyer will pay for return postage (except in cases of warranty). A refund will be issued within 2 business days of receiving the item(s) if the item(s) is deemed to be in returnable condition. Specific details and exceptions are as follows:

Product Exchanges: Saguaro Scuba does not offer product exchanges. Products must be returned (subject to Saguaro Scuba Inc.’s return policy) and replacement items purchased in a new transaction.

Regular Stock Product Returns: Regular stock products can be returned within 90 days of purchase to Saguaro Scuba Inc. There is no restocking charge when returning regularly stocked merchandise.

Special Order Product Returns: Special order items can only be returned within 90 days of purchase and are subject to a 20% restocking fee. All special order items will be clearly labeled both individually and on the shopping cart page for easy identification.

Non-returnable Products: Computers, Electronics & Cameras are returnable only if they have not been installed or used and if they are in new original saleable condition and packaging. Clearance items are non-returnable. eLearning codes are non-returnable.

Warranty Product Returns: Your purchase can be returned for a hassle-free replacement/repair provided that it is returned within the warranty terms and warranty period. The original receipt is required. Warranty returns without the original receipt will be made at Saguaro Scuba’s discretion. Products with a replacement warranty will be exchanged free of charge. Products with a repair-only warranty will be repaired in accordance with the manufacturer’s and/or Saguaro Scuba Inc.’s terms and conditions. Warranty claims are limited to replacement/repair of the product only. Saguaro Scuba Inc. not cover additional costs such as labor, incidental, or consequential damages.

Customer Reviews

Based on 1 review
Larry Wirsing
thank you

our inspection device was over 25 years old and died. the one we purchesed from you is perfect and come at the right time. Thank you!!!