Anyone try the cheap Chronographs from Ebay and Amazon?

Anyone know about this one? Aliexpress

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I'm new to the whole PCP game. I got one but the only thing I'm using it for is to dial in my hammer spring to find the best FPS for one of three pellets I use. I also validated this cheaply Chrono against two others that considerably more expensive and mine was with in one or two FPS. What else can I use this for.
Anything that flies🥴
 
Anyone try these inexpensive chronographs that are $35? I'm not planning on tuning very often. I just need to tune for slugs. I've seen some youtube videos and a few positive post. Just wondering if anyone has compared one to a more expensive chronograph. Are they accurate, and consistant? Looks like there not going to be the most durable for I wont be using it very much. I already have a chosen pellet I just need to figure out what slugs it likes. View attachment 339427
YES got one @$14 and it works perfectly , If your only interest is FPS or MPS . and there is math to take care of most other results .
 
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Anyone try these inexpensive chronographs that are $35? I'm not planning on tuning very often. I just need to tune for slugs. I've seen some youtube videos and a few positive post. Just wondering if anyone has compared one to a more expensive chronograph. Are they accurate, and consistant? Looks like there not going to be the most durable for I wont be using it very much. I already have a chosen pellet I just need to figure out what slugs it likes. View attachment 339427
Just got one for 32.00 off amazon. Seems like a good purchase. Seems to be working but without having another to compare it to can only assume it's accurate. But adjustments to the hammer spring are seen in the data. I'm calling it a successful thrifty purchase.

Chronos make the rabbit hole so much more deep and wide. Good times.
 
Rechargeable battery that lasts a long time. Never misses a shot. At least accurate enough for tuning. I think this is a case where cheaper is better.
I bought one as well. About $30 I think? But Last time I used id was in November. I left it outside in the shootin shack. I went outside yesterday to take a few shots, and low and behold, the Thing still had a charge and worked perfectly.