Features:
Numbers and pointer clearly show the RPM.
Blue light for easy reading in the .
Measurement is 0~8000RPM.
Suitable for 4,6,and 8 cylinder.
High sensitivity and easy operation.
Used to measure the RPM of automobile engine.

Note: It fits for gasoline engine, NOT for  engine.

Specifications:
Color:
Unit: RPM
Measurement : 0~8000RPM
: , Max. 0.3A
Tachometer size: 5.7 * 6.5cm / 2.2 * 2.6in (max. diameter * height)
Tachometer weight: 117g / 4.1oz
Package size: 17 * 12 * 7.8cm / 6.7 * 4.7 * 3.1in
Package weight: 275g / 9.7oz

Package including:
1 * Tachometer
1 * Hose
2 * Screws
1 * Gauge Holder
1 * Rubber