Speed meter Handheld High Accuracy Speed Measuring Instrument Initial Speed Velocity Velocimetry Tachometer

Mainly used for learning and experiencing the high-speed data processing ability of single-chip microcmputer and measuring the flight speed of various things.

Features:
This product is mainly used for object acceleration and velocity measurement. Individual users can be used to measure the design speed of all kinds of shoot playthings.
Mini size is easy to carry. Simple and easy operation.
Handheld type speed measuring instrument, with high accuracy measurement, 160 groups datas will be recording.
Measuring speed ranges: 1-999m/s.
Metal surface and fully closed, this speed measuring instrument will not affect by thesun and air current.
High accuracy, with accurate measurement data.
Humanized design unit conversion function.

How to Use:
LCD backlight setting, you can set constant light or long out. When you set as automatic, the screen will light out after 10 seconds without operation.
With automatic shutdown function.
Charged by USB line, about 1 hour chargetime then you can use more than 10 hours after fully charged. The red light bright whilecharging and the blue light bright in fully charged.
Built-in overshoot protect, overdischarge protect, short-circuit protect, etc.
With holders and pinboard package. Without using the pinboard, the using pipes diameter ranges is 20-31mm, less than 20mm you can add the pinboard or tie on the pipes. Using the pinboard, the using pipes diameter ranges is 16-43mm, less than 16mm you can add the pinboard or tie on the pipes.
Included three buttons, first is switch button also is confirmation button, second is up button, third is down button.
With Chinese and English switching function. You can change the language by yourself, press the down switch after starting up, and find the language line and press the confirmation key.
Using semipermeable half-reflecting LCD screen that you can see clearly in the darkness or in strong light.

Specifications:
Working Voltage: 5V
Measuring Pipes Caliber: 10mm
Accuracy: test error less than or equal to 0.5%
Measuring Speed Ranges: 1-999m/s
Cell(built-in): 1 * 5V 300mAh Lithium Cell
Package Size: 520 * 390 * 700mm / 20.47 * 15.35 * 27.56in
Package Weight: 290g / 10.24ounce

Notes:
Please allow 1-30mm error due to manual measurement.
Due to the difference between different monitors, the picture may not reflect the actual color of the item.

Packing List:
1 * Speed Measuring Instrument

 

Shipping:

1.We guarantee to ship goods out within 24-72 hour after payment confirmation except holiday.
2.We ship by China post,HKpost EMS,DHL,Fedex,according to your choice when placing orders .
3.If you didn't receive the item after 45 days,please feel free to contact us.We will make all our effort to resolve the problem.
4.We are not responsible for delays causedby the customs,Import duties,taxes or other customscharges.

Warranty:

1.All items have 1 year guarantee.IF your purchase do not meet merchantable quality, fitness for purpose or match the description, We can make sure your issues are resolved .
2.For wrongly-shipped items, Please contact us in 48 hours after delivery.We will arrange to deliver the correct items or return all your payment.
3.For defective or faulty products,please take photos or videos,we would resend or refund after confirmation.