"Now I can measure Convergence Error easily, accurately, and affordably."

      It's probably the most convenient and reliable way to check display convergence on your color monitor.   The Klein Gauge works on the principle of Optical Reconvergence of an image where the amount of reconvergence necessary is a measure of the convergence error present.


Theory Of Operation
      (fig. A) If a parallel prism is rotated to an angle from its usual position, the image will be displaced a distance "d" depending on , the thickness "t", and the index of refraction of the prism "n'", as given by a formula derived from Snell's Law:

d = tcos(tan-tan(asin((sin)/n')))

      Within the Klein Gauge, there are three prisms, each which passes one of the phosphor colors of a CRT.   The center prism is stationary and its image is used for position refrence.   The two outer prisms rotate.
      As an outer prism is rotated, the image beneath it appears to shift.   The amount of shift is calibrated in millimeters on the gauge's scale.   When the three colors of the image is shifted so that they are optically reconverged, the gauge scales read the convergence error present.
      Note that the displacement distance "d" is independent of the prism-to-image distance "D"; thus, the gauge measurement is free from parallax error which depends on scale-to-image distance.
     
Operation
      (fig. B) Generate a white grid pattern.   Place the gauge against the screen on an area where convergence is to be measured.   The orientation of the gauge shown is for measurement of convergence error in the "Y" direction.   To measure the "X" direction, the gague is rotated 90 degrees.
      (fig. C) If the horizontal lines of the grid pattern are misconverged, they will appear as three separate red, green, and blue lines.   Rotate the knob on each side of the gauge until the brightness centers of the three images line up.
      (fig. D) The image has now been optically reconverged, and the amount of convergence error between blue/green and red/green can be read from the scales.   The red/blue error can be obtained by subtracting the two readings.
      When it comes to precise measurement, you just can't afford to be wrong.   But, unless you have the right tools, your measurements are only guesswork.
      Getting it right is easy with the Klein Convergence Gauge.   It's the only affordable, hand-held equiptment around that can check display convergence on color monitors.   Extremely accurate, the CM7AG has a full scale reading of   ± 0.7 mm, and divisions are marked to .05 mm.
      That means not only can you provide claims and verify specifications, but you'll be able to do the job faster and with virtually no eyestrain.
      So whether you're in advanced computer technology, avionics displays, or any other job that requires CRT screen accuracy, get the Klein Convergence Gauge.   And, there's a very good chance you'll never be wrong again.

Features

Base dimensions 1.5" x 2.4" (38mm x 60 mm), weight 6 oz (170 grams)

Handheld

Laminated prism lens

4 x magnifier lens

Adjustable focus

Adjustable pointer for true zero adjust

Engraved Scale

Non-abrasive plastic feet

Rugged construction, aluminum alloy body, & black anodized finish.

Units are currently shipping from stock

All listed models are only $790.00 US-Dollars!

Versions
The following versions of this gauge are available for every application:

Model     Scale Range    Scale mm/div     Center Prism
CM7AG     ± 0.7 mm       0.05 mm          Green
CM7AR     ± 0.7 mm       0.05 mm          Red
CM14AG    ± 1.4 mm       0.10 mm          Green
CM14AR    ± 1.4 mm       0.10 mm          Red
CM28AG    ± 2.8 mm       0.20 mm          Green
CM28AR    ± 2.8 mm       0.20 mm          Red

Warranty
Klein offers a 30-day money-back guarantee if dissatisfied for any reason.   Klein also warrants the product against defects in workmanship and materials for one year.


Portland, Oregon USA

For more information, a quotation, or to place an order, please contact RJK-Barauck Call @ (650) 964-2213 or Fax @ (650) 969-5898 or Email rjk@techmart.com
We are factory authorized representatives.