DBA Stouffer Graphic Arts

Transmission Step Wedges

^{The
Stouffer 21-Step Transparent Guide is heralded around the world as
"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.}

^{Outstanding uniformity}

^{The mark of Stouffer Quality}

^{How
to use the Stouffer 21-Step Sensitivity Guide}

^{Stouffer
has a wide range of transmission step wedges
that are used in the various industries requiring
photosensitive quality control devices. Several
sizes and formats are offered to meet most needs. This listing covers the
most widely used step wedges:}

Part Number	Steps	Density Increment	F-Stop Equiv.	Dmax	Size
T1015	10	.15	1/2	1.40	1/2 x3 3/4"
T2115	21	.15	1/2	3.05	1/2 x 5"
T3110	31	.10	1/3	3.05	3/4 x 8"
T4105	41	.05	1/6	2.05	1" x 9 1/2"
T4110	41	.10	1/3	4.05	1" x 9 1/2"
T5100	5	1.00	N/A	4.00	2" x 4"

^{For critical densitometry with traceability, the Stouffer T2120CC
and T1530CC
meets and conforms to those needs. Densities of the T2120CC
and T1530CC compare with those of a National Institute of Standards and
Technology (NIST) Standard Reference Material No. 1008 Step
Tablet by means of a densitometer that conforms to conditions
specified in American National Standards Diffuse Transmission
Density A.N.S.I. PH2.19-1986.}

^{For a full
product listing go to: Product
and Pricing List}