The PTC® Model 450 is a hand held
portable reader and a compatible with all Brinell type
This machine features a battery operated, self-contained light
source. The pre focused illuminator uses one AAA-size battery.
The reticle is calibrated in 0.1 mm units over a range of 6 mm
and the diameter of the microscope field is 7 mm. The instrument
is quality built and durable, making it suitable for both
laboratory and shop. The Brinell Microscope Reader allows the
user to measure the diameters of indentations made by the ball
indenters of all Brinell type hardness testing machines for
ferrous and non-ferrous metals. The Model 450 Microscope is also
easily used as a calibrated portable microscope.