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    • Rub On Letters,Letraset
      • by color
      • by size
    • Rub On Letters,Chartpak FLS
    • Rub On Letters,Wilson Jones
  • Temporary
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    • Single Edge Razor Blades
    • Utility Knives , Carton Cutters
      • replacement refill blades
    • X-acto Blades , Hobby Blades
    • X-acto Knives , Precision Knives
  • Dry Transfer
    • Burnishers
    • Dry Transfer Lettering
    • Dry Transfer Numbers
    • Letters and Numbers Combo
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    • Art Set Novelty Gifts
    • Office Gifts
    • Outdoor Leisure
    • Tool Gifts
    • Travel Accessories
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      • cotton inspection gloves
      • lisle inspection gloves
      • nylon inspection gloves
  • Inspection Arrows
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  • Magnifiers & Loupes, All by MFG
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      • 6X 7X 8X 10X loupe magnifier
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    • tweezers
    • precision screwdriver sets
    • screwdrivers
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  • X-ACTO
  • FLS
  • Peak
  • FLS Discount Supplies
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  • Kraft
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  • Chartpak
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  • HUNT X-ACTO
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  • LinenTest
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  • Burgess Carlson & FLS
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  • ITW Mark-Tex DYKEM
  • Kimoto / Pantall
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  • Stouffer 21 Step Sensitivity Guide T2115
  • Stouffer 21 Step Sensitivity Guide T2115
  • Stouffer 21 Step Sensitivity Guide T2115

    Stouffer 21 Step Sensitivity Guide T2115

    Stouffer Industries, Inc.

    MSRP: $19.99
    Now: $8.99
    (You save $11.00 )
    (4 reviews) Write a Review
    SKU:
    T2115
    Condition:
    New
    Availability:
    5 Left in Stock currently
    Width:
    3.50 (in)
    Height:
    0.10 (in)
    Depth:
    5.50 (in)
    Shipping:
    Calculated at Checkout
    Bulk Pricing:
    Buy in bulk and save

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    Product Description

    Stouffer 21 Step Sensitivity Guide T2115
    The Stouffer  21-Step Transparent Guide is the platemaker's choice. It serves as a gauge to evaluate the variables encountered in the exposure and processing of lithographic plates and photographic materials by contact. It indicates the direction and magnitude of exposure or processing adjustments necessary to achieve the desired results. It is also used with contact positives, silk screen, printed circuit boards, and most other photographic applications for judging results, determining speed and contrast of emulsions, and hardness of coatings.
    - Transmission Step Wedge , numbered , 1/2" x 5"
    - A quality control scale for determining standardizing the proper exposure and processing of photo sensitive materials.
    - Used with litho plates, photo polymer plates, silk screen stencils, printed circuit boards, film positives, photo print papers, and more.
    - Includes an exposure correction table

    Currently 5 in stock, we expect our next shipment in July
    mpn: T2115

    Bulk pricing quantity discount available, no promo code required.  Click buy in bulk and save for price breaks.

     

    How to use a T2115 21 step

    Instructions for Lithography

     

    Set the contact printer / vacuum frame to make several trial exposures on separate pieces of film, with each exposure for a different length of time.

     

    Make three exposures: one determined by past experience or the exposure normally used in daily production, one for less, and then one for more. It may be necessary to repeat this testing procedure using different exposure times.

     

    Process the test negative for the time and temperature recommended by the film manufacturer. It is important to keep processing consistent.

     

    Examine the step tablet/wedge image on each of the negatives. Select as the best the negative in which step 7(on a 21 step wedge) is developed to a dense black, with step 8 only slightly dense. Step 7 will be the aim point for normal copy.

     

    There are many different ways for exposing plates. There are an abundance of different exposure systems and processing techniques. The one constant is the step tablet/wedge. Use the step tablet/wedge as a benchmark for all exposures to achieve accuracy and repeatability.

     

    To find the exposure factor to hold more or less on the Stouffer 21 Step Platemaker Sensitivity guide, follow the chart below.

    To Change Exposure      1 Step      2 Steps      3 Steps      4 Steps
    To Increase Exposure     1.41x        2.00x         2.82x         4.00x
    To Decrease Exposure      .71          .50            .35             .25

    Instructions for Photopolymer plates:  Please see video instructions

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    Stouffer 21 Step Sensitivity Guide T2115
    Stouffer Industries, Inc.
    Stouffer 21 Step Sensitivity Guide T2115

    4 Reviews Hide Reviews Show Reviews

    • 5
      HIGH QUALITY PRODUCT

      Posted by Alyssa Reniva on 11/28/21

      Very Fast Delivery

    • 5
      Great tool

      Posted by midtonegrey on 10/22/20

      Very handy tool, does exactly what it's meant to do and saves a lot of time in the darkroom :)

    • 5
      Best price

      Posted by Enrique W on 9/23/19

      This is a great product at a great price. I couldn't find it anywhere else.

    • 5
      Same good old Stouffer 21 step scale

      Posted by Art on 3/21/18

      Probably the fourth or fifth one i have owned and misplaced in my darkroom, This vendor was reasonably priced, shipped quickly and received in good condition, I will buy from them after I loose this new one I just got

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