30-9999 fps for Shooting playthings speed Meter Velocimetry Slings Speed Measuring or 3PCS Light Str

Chronograph for Shooting

I will give you the instructions in electronic file! Give me google email!

This product is mainly used for object acceleration and velocity measurement, inp>

Features: Aluminum alloy, stainle steel material, support rod, velocity measurement, energy measure, speed energy, looking through record and view average. This product is made by DIY, with concise and practical, accurate and durability for the purpose. It is mainly used to learn and experience the ability of the SCM to proce data at high speed, and it can measure the flying speed of various projectiles. Such as: table tennis, badminton, bow, arrows, physical acceleration experiment, projectile free fall experiment, playthings speed measurement, children's soft playthings, etc. The core components are industrial-grade package, stable performance, small error. This product for the speed of 1 to 999.9 meters per second projectile with accurate speed. The utility model has the advantages of large effective induction area, convenient use and high sensitivity. Strong adaptability to ambient light, indoor and outdoor can be used during the day and night. Can save 20 sets of data, you can see the average.

Specifications: Voltage: DC 6V Battery(not included): 4 * AA battery Working Temperature: -30℃ - 60℃ Accuracy: test error ≤0.5% Measuring Range: 1-3000 M/S (FPS range 30-9999fps) Standard three trod can be installed This product does not contain trod and batteries Item Size: 330 * 80 * 44mm / 12.99 * 3.15 * 1.73in Package Size: 350 * 110 * 110mm / 13.78 * 4.33 * 4.33in Item Weight: 436g / 0.96lb Package Weight: 520g / 1.15lb

Notes: This product is infrared radiation type, the light source has been integrated in the hine, no external light source. Recommended for use in low light environments. The darker the ambient light, the better the hine performance. For outdoor use and strong light conditions, a light shield must be added. When measuring the speed of the projectile with higher speed. Please take appropriate protective measures. In order to avert the rebound of the projectile after hitting the hine and causing damage. Observe the marking on the left and right sides of the light bar when installing, and the str with the light is facing down.

Package List:1 1 * One Set of Speed Measuring Instrument

Package List:2

3PCS Light Str

1) We accept , , TT. All major credit cards are accepted through secure payment proceor ESCROW.

2) Payment must be made within 3 days of order.

3) If you can't checkout immediately after auction close, please wait for a few minutes and retry Payments must be completed within 3 days.

1. WORLDWIDE SHPING. (Except some countries and APO/FPO) 2. Orders proceed timely after the payment verification. 3. We only sh to confirmed order addrees. Your order addre MUST MATCH your Shping addre. 4. The images shown are not the actual item and are for your reference only. 5. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season. 6. If you have not received your shment within 30 days from payment, please contact us. We will track the shment and get back to you as soon as poible with a reply. Our goal is customer satisfaction! 7. Due to stock status and time differences, we will choose to sh your item from our first available warehouse for fast delivery. 8. Delivery Time:

1. You have 7 days to contact us and 30 days to return it from the date it was received. If this item is in your poeion more than 7 days, it is considered used and WE WILL NOT ISSUE YOU A OR REPLACEMENT. There are NO EXCEPTIONS! Shping cost is bear by both seller and buyer in half. 2. All returned it MUST BE in the pack and you MUST PROVIDE us with the shping tracking number, specific reason for the return, and your po#. 3. We will YOUR FULL WINNING BID AMOUNT, upon recet of the item in its condition and pack with all components and acceories included, AFTER BOTH Buyer and Seller cancel the transaction from aliexpre. OR, you may choose to have a replacement. 4.  We will bear all the shping cost if the product(s) is (are) not as advertised.

1. 12 months Manufacturer`s limited Warranty for defective it (excluding it damaged and/or misused after recet). Acceories come with a 3-month warranty. 2. Defective it MUST BE reported and returned within the warranty period (and in the pack, if poible). You must tell us what the defect is and give us your order number. WE DO NOT REPAIR OR REPLACE IT WITH AN EXPIRED WARRANTY. You agree to all of the above-listed policies upon ordering on aliexpre!

We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very ant We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily addre your concerns. It is impoible to addre iues if we do not know about them!

About shping
Shping and Pack All it will be double checked and well packed before sending.It will be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for e areas,it may take a little longer). 

Special Announcement:
Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resoe the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .

Your 100% satisfaction is very ant to us
If the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.