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The "TEC-HRO bi-lux" micro-precision diopter is a completely new development in this sector.

An additional “centering ring” helps prevent aiming errors and thus increases your accuracy.

Ultra-fine detents allow for micro-precise adjustment (2 clicks for one-tenth of a ring at 10 and 50 m)

The additional centering ring on the diopterrequires no additional attachments such as z.B. sunshades... thereby ensuring high light transmission. 
The diopter is shipped with the additional ring—which has a standard diameter of 3.0 mm—but can be replaced at any time.
This additional “reticle” effectively forces the shooter to look through the center of the iris.

The graphic in the photo and the following video show that without the additional centering ring, there is plenty of room for the front sight to “jam.” The centering ring greatly reduces this source of error, minimizing aiming errors. 

• Micro-precision: Thanks to fine-threaded bronze spindles and stainless steel slide bearings, we achieve high precision to enable exact adjustments for the ever-increasing performance demands of top shooters and benchrest shooters.
  • No compromises on materials or precision: we achieve the highest precision and strength by using stainless steel for the base unit.
    The housing is made of high-strength aluminum, as used u.a. in aircraft construction. We manufacture the fine-threaded spindles and the rotary knobs from bronze, as this material is harder than aluminum, has self-lubricating properties, and thus achieves excellent sliding characteristics.
    The surfaces of the bronze and aluminum are chemically treated and thus protected against oxidation—stainless steel does not oxidize naturally.
    You can feel the high quality of this compact “targeting device” the moment you pick it up.
    
    Weight: 280 g

• 60-click adjustment (= 60 clicks per full rotation) for the finest adjustments to the point of impact
  

  Withthe “TEC-HRO Diopter bi-lux” , 1 click results in a point-of-impact shift of just half a “tenth of a ring”—both at
  10 m and at 50 m. This allows you to correct the shot pattern z.B. from 10.8 to 10.9 with just two clicks.
• Low profile —just 10 mm higher than the edge of the iris—ensures an unobstructed field of view when aiming through the diopter.
  
• Wide adjustment range for both elevation and windage.
• Unique, compact design: unlike anything that has come before, the design of this diopter is striking and will not only capture your gaze through the diopter—but also draw others’ attention to your diopter.
• Side-adjustment dials are located on both sides, making them equally easy to operate for both right- and left-handed users.
• Ideal diopter also for benchrest shooting / benchrest shooters
• Available for Walther, Anschütz, Feinwerkbau, Bleiker, Grünig & Elmiger, Steyr... (Starting in August 2026: 1 diopter = universally compatible with all systems!!)
  
  
  Optional add-ons:
• Expandable with color filters
  
  
  Any standard iris diaphragm (with or without a color filter) fits this diopter.
  
  
  Here you will find the user manual for the centering unit

" ["description_short"]=> string(317) "

Micro-Precision Diopter, 60-click adjustment withan additional"centering ring" to prevent aiming errors and ensure maximum precision
for supported shooting and top-level shooters

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Ultra-fine micro-adjustment. Superiority through technology." ["meta_keywords"]=> string(0) "" ["meta_title"]=> string(63) "Micro Precision Diopter 60-Click with Integrated Centering Ring" ["link_rewrite"]=> string(53) "tec-hro-bi-lux-match-diopter-with-60-click-adjustment" ["name"]=> string(55) ""TEC-HRO bi-lux" match diopter with 60-click adjustment" ["description"]=> string(7030) "

The "TEC-HRO bi-lux" micro-precision diopter is a completely new development in this sector.

An additional “centering ring” helps prevent aiming errors and thus increases your accuracy.

Ultra-fine detents allow for micro-precise adjustment (2 clicks for one-tenth of a ring at 10 and 50 m)

The additional centering ring on the diopterrequires no additional attachments such as z.B. sunshades... thereby ensuring high light transmission. 
The diopter is shipped with the additional ring—which has a standard diameter of 3.0 mm—but can be replaced at any time.
This additional “reticle” effectively forces the shooter to look through the center of the iris.

The graphic in the photo and the following video show that without the additional centering ring, there is plenty of room for the front sight to “jam.” The centering ring greatly reduces this source of error, minimizing aiming errors. 

• Micro-precision: Thanks to fine-threaded bronze spindles and stainless steel slide bearings, we achieve high precision to enable exact adjustments for the ever-increasing performance demands of top shooters and benchrest shooters.
  • No compromises on materials or precision: we achieve the highest precision and strength by using stainless steel for the base unit.
    The housing is made of high-strength aluminum, as used u.a. in aircraft construction. We manufacture the fine-threaded spindles and the rotary knobs from bronze, as this material is harder than aluminum, has self-lubricating properties, and thus achieves excellent sliding characteristics.
    The surfaces of the bronze and aluminum are chemically treated and thus protected against oxidation—stainless steel does not oxidize naturally.
    You can feel the high quality of this compact “targeting device” the moment you pick it up.
    
    Weight: 280 g

• 60-click adjustment (= 60 clicks per full rotation) for the finest adjustments to the point of impact
  

  Withthe “TEC-HRO Diopter bi-lux” , 1 click results in a point-of-impact shift of just half a “tenth of a ring”—both at
  10 m and at 50 m. This allows you to correct the shot pattern z.B. from 10.8 to 10.9 with just two clicks.
• Low profile —just 10 mm higher than the edge of the iris—ensures an unobstructed field of view when aiming through the diopter.
  
• Wide adjustment range for both elevation and windage.
• Unique, compact design: unlike anything that has come before, the design of this diopter is striking and will not only capture your gaze through the diopter—but also draw others’ attention to your diopter.
• Side-adjustment dials are located on both sides, making them equally easy to operate for both right- and left-handed users.
• Ideal diopter also for benchrest shooting / benchrest shooters
• Available for Walther, Anschütz, Feinwerkbau, Bleiker, Grünig & Elmiger, Steyr... (Starting in August 2026: 1 diopter = universally compatible with all systems!!)
  
  
  Optional add-ons:
• Expandable with color filters
  
  
  Any standard iris diaphragm (with or without a color filter) fits this diopter.
  
  
  Here you will find the user manual for the centering unit

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Micro-Precision Diopter, 60-click adjustment withan additional"centering ring" to prevent aiming errors and ensure maximum precision
for supported shooting and top-level shooters

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