Compliance with standards
ASTM-A1038-2005；DIN 50159-1-2008；JB/T9377-2010。

Product Introduction
Long Head Manual Ultrasonic Hardness Tester is also known as
Ultrasonic Gear Hardness Tester and Deep Hole Hardness Tester because
the configured ultrasonic probe is relatively slender and can non-destructive
measure workpieces that cannot be directly measured by ordinary hardness
testers such as gears and deep holes. manual ultrasonic hardness
tester is also known as ultrasonic pipeline hardness tester and internal
hardness tester because the configured ultrasonic probe is very short and
can directly measure the hardness of the entire pipeline without damage.

more details,  download datasheet: hardness tester