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Transparent
Comparators - for sizing indications
Technical Data Sheet
Fluorescent comparators consist of a number of transparent tokens,
measuring typically 30 X 100 mm and a few mm thick having yellow/green
fluorescent marks of known dimensions. The various designs offer dots
and lines of known dimensions while some provide fluorescent circles to
allow an accurate estimate of the spacing and grouping of the
indications. The markings on the comparators appear a brilliant yellow/
green when viewed under UV-A of a peak wavelength of 365 nm. Under white
light illumination they appear bright green. They are 13 various designs
which cover a wide range of applications in magnetic particle
inspection, penetrant testing, radiography and visual inspection.
Type 1: A transparent token 17 X 80 mm
having 10 dot type indications with diameters from 0.005 to 0.125 inch.
Type 2: A metric equivalent of the Type 1
with the diameters of the dots ranging from 0.2 to 3.0 mm.
Type 3: TAM 135273, a transparent token
measuring 20 X 100 mm to the requirements of Pratt and Whitney having
both open circular and linear indications ranging from 0.2 to 4.6 mm,
the lengths of the linear indications being the diameters of the
circles. (This model has inch measurements as well as the metric ones).
Type 4: General Electric Company FPI
Scale, a transparent token measuring 20 X 120 mm having ten each solid
circular and linear indications from 0.005 to 0.125 inch, the lines
being the diameters of the circles. this Type is manufactured to the
requirements of General Electric.
Type 4a: Rolls Royce FPI Scale; this model
is identical to the Type 4 except that it is inscribed with Rolls Royce.
Type 5: Magnetic Particle; a transparent
comparator 20 X 100 mm. Having eight linear indications from 0.03 to 0.5
inch.
Type 6: Spacing; this comparator measuring
25 X 120 mm. Is designed to assist in sizing and spacing of indications.
Four each different sized filled circles from 0.015 to 0.125 inch
diameter are placed in a line at distances of 1,2 and 3 diameters for
this purpose. Five open circles having diameters from 0.06 to 0.5 inch
are also supplied.
Type 7: Modified General Electric; this is
very similar to the Type 6 but has only four spaced solid circles in
fours which range from 0.015 to 0.045 inch. The rest of the comparator
has eight each open circles and linear indications rangign from 0.030 to
0.5 inch with the lines being the diameters of the corresponding
circles.
Type 8: This is the metric version of Type
7 with the four spaced circles in three sizes from 0.75 to 1.5 mm
diameter and the open circles ranging in diameter from 2.5 to 12.5 mm.
Type 9: This comparator, measuring 20 X
100 mm has ten each circular and linear indications ranging from 1/64 to
1/4 inch in fractions of an inch diameter/length.
Type 10: Foundry Circular; this comparator
measuring 20 X 100 mm has three each circular and linear indications of
3/32, 1/8 and 3/8 inch diameter/ length.
Type 11: Metric; this comparator measures
20 X 100 mm and has ten each circular and linear indications ranging
from 0.3 to 6.3 mm diameter/ length.
Type 12: Foundry Solid; this comparator is
similar to Type 10 except that the indications are solid circles.
Type 13: Swing Away; this comparator is
made like a feeler gauge and has ten individual plastic leaves each with
a solid circular indication ranging from 0.005 to 0.125 inch diameter.
For any questions or queries regarding these products please
contact
us!
Transparent Comparators
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