Estes 2246 Altimeter, Flying-Rocket-Model Altitude Tracker, Rocket Model Kit Accessories for Ages 10+

This altimeter made my son's science fair project a breeze. For the project we tested to see if the body length affects the rocket's altitude. We built 3 rockets from scratch using all the same supplies from an awesome online rocket site. We attached the altimeter to the nose cone via the provided clip (see image), turned the altimeter on and launched. The first test launch landed in a tall tree and we thought the altimeter (and rocket) was lost. But after I scaled the tree and used a long pole I eventually got it back. We rejoiced. A day later poison oak broke out all over my hands and neck. Much misery. Anyway, all the subsequent launches went great, the altimeter provided the data we needed and we retrieved all of the rockets without incident. There was a question about whether we missed recording an altitude...this altimeter recorded the launches and we cycled through them all to ensure we had them written down. Awesome feature! Overall, this altimeter adds an additional wow factor to the already exciting hobby of rocket building. I haven't had any issues after about 12 launches.

Don't know what those other reviewers' problems were, but it has worked just fine for me. I've simulated over 15 launches by cupping it in my hands and sucking the air out and putting it in a cup and attaching a vacuum to it, and has worked every time. Launched it in rockets twice and worked both times. The second rocket actually broke at apogee and the altimeter fell to the ground. Found it in the grass after 20 minutes of searching. It read 853 ft, so I'm assuming that is how far it fell. Still works. Great low cost, no frills altimeter. Edit: Have had it in two more rockets. Both landed in trees, but got them both down, one by throwing a football at it. Altimeter still works!

I bought this for a bottle rocket science experiment for my son. The altimeter didn't work consistently at all. We tested it on a drone to make sure to pick different heights and have the drone hover to allow the altimeter to acclimate. It wouldn't register an altitude at all probably 90% of the time. Shot it off on a bottle rocket with no results sometimes and crazy results others. Bottom Line - I shouldn't have to work so hard to make something so simple work - and I tried for days. I have an engineering degree, so I don't give up easily when something doesn't' work. This. Does. Not. Work. This was a complete waste of money, as well, wasted valuable time in helping with my son's Science Fair project. Very disappointed and felt I was ripped off.

So my son and I keep a spreadsheet of our launches and have drilled small holes in our rockets so this device can detect the change in pressure. In 31 launches, the device failed to record the altitude twice. It can be a bit difficult packing the parachute and the altimeter, so fold your chute with care and consider using a smaller parachute (order one size down from whatever came standard). The added weight should lower your apogee by about 200 feet. It's a good device that has added to the enjoyment of our launches.

I've been doing rocketry since 1974, and this is the first truly simple-to-use and affordable altimeter to come along. The only downside I found was that it doesn't quite fit inside a BT-20 sized rocket. I masked mine off to keep debris out of the electronics, then sanded it down to fit. Problem solved! READ your instruction booklet. Be advised that you must drill holes to equalize pressure inside your rocket- they must go in a specific location. If you follow the instructions, you'll get good results. It's easy to use and dependable. I have launched mine more than thirty times, and gotten back good data each time. The LCD display is readable even in bright, direct sunlight. This altimeter adds a whole new element of fun to rocketry, and I highly recommend it.

My review is for the item, and also for ESTES customer service - I received the altimeter, read through the instructions, and promptly put it to the test as my son was doing a science project for school involving rockets. Long story short, we couldn't make it work a single time. I e-mailed ESTES to see if I was doing something wrong, or if there was a way to "bench" test it - Mike was quick to reply, told me I was doing everything right, and had me do a test where I cupped my hands together tight, with the altimeter inside, and "sucked" as hard and quick as I could to simulate the action of the rocket. I still got no reading, which told us both the unit was DOA. Without further questions he dropped another one in the mail to me, I had it two days later, and it's working like a champ. So, long story short the unit does work, does what it's supposed to do, and I think for the price it can't be beat. Thanks ESTES for the great service!

I bought this altimeter for a science experiment. This product was so useless and broken that I wasted my time and effort trying to fix it. The altimeter did not show results after several times of trying. It does not work. Do not waste your money on this.

Just what our son needed when he shoots off his rockets!!

Everything was perfect, lived the bonus gift

説明書は英語だけど、使い方を見ながら設定した。 が、モデルロケットに取り付けても高度が測れなかった。 ①スイッチオン ②ボタンを押して0000表示 フィートorメートルは別にしても、①②以外に設定あるのだろうか？ そうでなければ、不良品？ 追記2025.5.16 モデルロケットのヘッドに吸気孔以外に排気口を設けたらしっかり計測できた。 空気の流れをセンサーが感知して動くものだった。 これで使い方は問題なし。ちゃんとメートル計測もできた。ちなみに写真はフィート。

Brilliant easy to use fits easily on all my quadcopters . Nice peice of kit.

Second estes altimeter. Never fails. Would recommend.

H27/11/15に購入し、ウオーターロケットに搭載して現在も使用中です。高度が簡単に測定できるのでとても便利です。また、思いのほか丈夫なのに驚きました。というのは、パラシュートが開かずロケットが約40ｍの高度から地面に激突したことがありますが、激突直後は常に高度0ｍが表示され壊れてしまったと思い、１ヵ月半程ほっておき処分する前に念のために再度ロケットに搭載して同じ条件（水量、空気圧）で打ち上げて見たところ、以前とほぼ同じ高度が表示されたからです。条件を変えて見ても激突前とほぼ同じ高度を表示します（数ｍ差異はありますが、気象条件が異なり完全に同じ条件で打ち上げできないため事実上問題なしと言えます）。それでも、☆を４つとしたのは、高度の単位を「ｍ」に切り替えても電源をオフにすると常に「ｆｔ」に戻ってしまうことと、電池が手に入りにくいためです。 ＜H28/7/10追記＞ アルチメーターとして、本商品よりも新しいものが発売されています。Jollylogic(USA)社製の「AltimeterONE」、「AltimeterTWO」です。前者はロケット、飛行機、凧、気球などに使用できる、後者は画期的ロケット専用とのことです。ここでいうロケットは本来火薬を使うモデルロケットを想定しているようですが、YOUTUBEでUSAの動画を見ていますと、水ロケットでも使用されています。更に新商品として、同社から「AltimeterThree」（ロケット,ヘリ,タコ,グライダ等に利用可能とのこと）が発売されているようです。これらの商品は、例えばモデルロケットを取り扱っている「ケイテック/湘南ロケット/ロケットランド」のホームページから「新アクセサリ・部品」のページを閲覧すると、機能の説明や価格等が分かりますので、興味のある方は是非一度閲覧されるといいのではないかと思います。