V28 Mini Automotive Dashboard Car Ball Compass

Design for Car & Boat
Luminous: No
Waterproof: Yes
Shockproof: Yes
Length*width*Height
V28-Black: 3.8cm*4.3cm*3.8cm (1.496in*1.693in*1.496in) ; V30: 3.7cm*3.7cm*3.7cm (1.457in*1.457in*1.457in)
Ball Diameter
V28-Black: 2.8cm (1.1in) ; V30: 3.0cm (1.18in)
Net Weight
V28-Black: 17.5g (0.62oz) ; V30: 22.5g (0.79oz)
Special Reminder:
You should confirm the correct direction outside the car before finding a suitable location inside the car. Avoid iron and magnetic items in the car from affecting the ball compass reading.

Features: mini size, shockproof, waterproof, accurate pointing
The reading method of ball compass is opposite to the pointer compass, the direction of the ball compass you see is the direction the car is heading.
Installation instructions: First determine the correct direction outside the car, other reference compass should be separated from the ball compass by more than 20 inch.
Then find a suitable position in the car so that the direction of the ball compass is the same as that outside the car.
Finally, tear off the double-sided tape to fix the ball compass.