Tachometer (also called a revolution-counter, rev-counter, or RPM gauge) is an instrument that measures the
rotation speed of a shaft or disk, as in a motor or other machine

Tachometer dt-2234a

tachometer dt-2234c

tachometer dt-2236

tachometer dt-2856

tachometer dt-2857

tachometer dt-2858

Tachometer (LASER TYPE)

model:dt-2857
measurement range:2.5～99,999r/min
resolution:0.1/1
accuracy:±(0.05%n+1d)
memory: max/min/last value
power supply:4x1.5v aa(um-3)battery
dimension:145x74x32mm　

Tachometer (also called a revolution-counter, rev-counter, or RPM gauge) is an instrument that measures the rotation speed of a shaft or disk, as in a motor or other machine

Tachometer (LASER TYPE)

Tachometer (also called a revolution-counter, rev-counter, or RPM gauge) is an instrument that measures the
rotation speed of a shaft or disk, as in a motor or other machine