Tri-Square, Manhole Step Measurement Instrument Holeman

Carpenter's square that is convenient for step measurement.
[Features]
· Install to a carpenter's square for measuring manhole unevenness.
· A tool for measuring level differences, such as between manhole handholes, road surfaces, etc.
· Silver Carpenter's Square, Thick and Wide Type, "Step-Up" Scale: MT-30KD, MT-50KD.
· Silver Carpenter's Square, Thick and Wide Type, Silver Dragon: MT-30, MT-50.
· Material: Stainless steel.
[Applications]
· For measuring level differences, such as between manhole handholes, road surfaces, etc.