Best Flash Light vs Strobe tachometer (RPM meter)

* Best Front Camera Flash Light With Video Zoom * *Fastest Front Camera Zoom Light* *********************** Don't wait! Get The Best Front Camera Zoom Light! *********************** Get the brightest, fastest, and most feature rich front light with video camera zoom for the iPhone in the market!!! The app uses the front camera light on iPhone as a camera light and then allows you to zoom in! Plus you can setup a timer so that the light turns off after a few minutes as well. You can also use your camera zoom flash light with additional light. There are many ways you can use a camera light. Is a front facing camera light a necessity for an iPhone? Yes, Yes, & Yes!!! *Special Feature: Light + Video Zoom View We've added a special video view to the light! When would this be useful? Lets say you are replacing the bulb in the backyard and need to read the bulb voltage in the dark. Turn on the app, activate camera light & video and viola. Not only will you have light but you'll also be able to zoom in and see the exactly voltage of the bulb you are replacing from the phone. * How can you use the front light? Let us count the ways! - Set Light Timer - Light Up Room For Few Minutes. - Use it to open doors in low light - Find things in your purse - Find your keys in the dark - Read in the dark - Replace backyard bulb at night - walking to your car at night - During a power outage - Hiking or outdoors - SOS During Emergencies * FEATURES: - Instant On Light When App Activates - Front Light With Video (Must Have) - Strobe Light Effect with Speed Control - Clap For Light On/Off Control - Flip Device On/Off Control - Multiple Tap Light On/Off - Energy Saving Light - Set Custom Light Timing - Battery Indicator * One example of where you can use the light with zoom feature is, if you wanted to read the label on the back of the washer and dryer to replace a part. Simple turn on the light & video view and then read the label from the app. This is just two of thousands of different incidents that the front light with zoom could come in handy. User Reviews: 1) It works like a charm. No ads. Many features and it's free! 2) Great app. Wow. Love the clap on clap off feature. 3) Best flash light ever Many more amazing reviews, see below :-) Thank you all for your support and for using the app. Extended use of the light will drain your battery quickly.

STROBE TACHOMETER When the flicker frequency of light coincides with the speed of any object, such as a fan, the rotating fan may appear to be stationary. Changing the frequency of the flicker of light may help detect the rotation speed. You may easily use the flicker frequency control buttons to quickly assign the flicker frequency with an accuracy of 0.0001 Hz (0.01 RPM): • Up to 1000 Hz (60 000 RPM) for a connected flashlight (see the video on YouTube: https://youtu.be/iq6Xiums05o). • Up to 100 Hz (6000 RPM) for the iPhone flashlight. IF THE SPEED IS MORE THAN UPPER LIMIT, YOU MAY STILL DETERMINE THE SPEED BY FIRST MAKING MEASUREMENTS WITH A LOWER FLICKER FREQUENCY AND THEN MAKING A SIMPLE CALCULATION (AS EXPLAINED IN THE APPENDIX). To change the frequency, you should simply press and hold the button. In the app settings, you can adjust the speed at which the flash rate changes when you press and hold the button. The flicker frequency can be displayed either in Hz or RPM. The image you see will be sharper in lower external light. After a long period of usage, in case of overheating, the iPhone flashlight turns off automatically. LASER TACHOMETER • Measurement range from 0.3 Hz (18 RPM) to 1000 Hz (60 000 RPM). • Step 0.01-0.0001 Hz (1-0.01 RPM). • Update time 1 sec. • 5 mW laser power required. MAGNETIC TACHOMETER This tachometer operates by measuring the magnetic field from a spinning magnet. The magnetic field is measured by the iPhone's magnetometer. The magnetic tachometer is best suited for measuring low rotation speeds (from 6 revolutions per minute). It can also be used for measuring medium rotation speeds (up to 2,700 RPM), but at such speeds there is a risk of spontaneous tearing away of the magnet and strong vibration due to center-of-gravity shift. • Measurement range from 0.1 Hz (6 RPM) to 45 Hz (2,700 RPM). • Step 0.2-2 %. • Update time 2-5 sec.