How to Test Resistance of atomizers?

ZP Resistance Tester OHM Meter 521 Mini Tab Ohm Reader
https://www.everzon.com/zp-resistance-tester-ohm-meter-521-mini-tab-ohm-reader.html

ZP Resistance Tester OHM Meter 521 Mini Tab Ohm Reader is designed for 510 Thread RDA RBA DIY Vaporizer to test and fire the coil resistances for more accurate coil building. Great for DIY starters and advanced vapers.

Resistance Test: Turn the switch to the "Meter" location and screw the atomzier on, the LED will show the resistance.
Fire: Turn the switch to the "Fire" location and screw the atomizer on, press the "Fire" Button, heating wires will be power on and burned red.
Charging: Red light flash to indicate the 18650 battery is in charging.

Note: not include atomizer and battery

Parameters:
Material: ABS Plastic
Size: 82* 61* 26 mm
Function: Ressitance test/ Fire/ Charging
Resistance test: 0.01-9.99 ohm
Lowest resistance rate: 0.1 ohm
Input voltage: micro USB 5.0V

Features:
ABS struction
Suitable for 510 Thread RDA RBA DIY Vaporizer
Test resistance, fire and charging
Low-voltage protection
Short circuit protection
Breaker protection
Low resistance protection
Burning time protection

Package:
1* OHM Mester (no USB cable)