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Ratings for products on Gadget Flow are based on quality, competitive features, aesthetics, price, and more. We also take feedback from our users seriously. Products with negative feedback (shipping delays, quality issues, etc.) will go down in rating. Feel free to report your experience with this brand and we will investigate.

Caliper Slide Rule Mechanical Watch

Editor's Rating
4.7?
Discovered on 2017-08-03

Get more out of your timepiece when you wear the Caliper Slide Rule Mechanical Watch. This watch features an impressive tool: an integrated slide rule. The Slide Rule Watch allows you to quickly perform mathematical tasks such as multiplication, division, currency conversion, and unit conversion. The watch itself is purely mechanical and requires no battery. It is self-winding, so the motion of your daily activities keeps it powered. The case is milled from high-grade 316L stainless steel. The glass on the front is a scratch resistant sapphire crystal. There is also glass on the back of the case so you can see the inner workings of this incredible little machine. The Slide Rule Watch comes in two versions. The A10 has a black case and black interior slide rule. The D1B features a black case with a white interior slide rule.

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Overview
Overview & Specs
Material :
Stainless Steel, Sapphire Crystal
Models :
A10, D1B
Slide Rule :
Multiplication, Division, Currency Conversion, Unit Conversion
Water Resistance :
10 ATM
Discovered on:
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Comments
Kickstarter Comments (50)

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Nick W!
Review from Kickstarter
Fantastic watch. Thanks again for a great campaign. It's really appreciated you consider our comments during the process. This slide rule watch with the clear face (to allow unobstructed viewing of internals) is amazing. Hope you are working on a new product now. :)
ponso
Review from Kickstarter
I am also very happy with my watch! I've never had a clasp as this one and it took a bit to get used to. thanks Caliper Timepieces Inc.!
Markus Jöbstl
Review from Kickstarter
Received my B4O a week ago and am really happy with the presentation and look:
http://www.uhrensammlung.net/2011/_pics/1140_1522062221.jpg Although the milanese strap is a really fine one I didn't get used to it and exchanged it with a grey, nylon zulu strap:
http://www.uhrensammlung.net/2011/_pics/1140_1522062242.jpg The UPS delivery worked flawlessly and I could pay VAT in advance online with my registered account. VAT to Austria was approx. 50EUR. No additional handling fees. After all i'm really happy to have backed this Kickstarter which has run as smooth as can be. Many thanks and kind regards - Markus
Caliper Timepieces Inc.
Review from Kickstarter
@Menno van Beek. I have forwarded your issue to my UPS contact here in Canada but due to the time difference, they may not be able to intervene in time on Monday. I will send you a private message to collect your address change information in case the parcel does get returned.
Menno van Beek
Review from Kickstarter
L.S.
You've send me your package with UPS. unfortunately UPS turns out to be the lousiest transporter.
I tried to change the address for delivery, but they insist on me creating an account (which is illegal to demand according to dutch law). I did however create an account, but then the address is not accepted. By the time you read this message, their 3rd and final attempt will have been made and they will send the package back to you.
I don't have any direct contact-details from you, so please contact me for an alternate way to deliver .... UPS is in Europe not at all equiped to deal with private recipients. Postal-service takes more time, but will deliver as will DHL for example.
kind regards, Menno
Chris Smith
Review from Kickstarter
Received both my watches! Beautiful! Uh-oh. One will not wind or run? Mikael to the rescue! A prompt turnaround on the problem one and I have both mine and a ready to go gift! Fortunately we were both in Canada so we are not far apart! A great combination - attention to detail of design along with attention to detail of customer service. My watches are beautiful, and feel like I can expect them to run for years. I was showing it off at work - in a very high tech, very digital environment, and everyone either loves it, or at least finds it fascinating! Thank you!
Jean-Louis Boers
Review from Kickstarter
Received my B40 watch a few hours ago. All I can say is Wow! This timepiece exceeded my expectations! Beautiful work. Well done Sir! The slide rule on the watch is going to come in handy. And the addition of Pi is a nice touch. I use that a lot in my work. The separate slide rule disk is already in my toolbox next to my straight slide rule. Easy to use too. Nice addition to the watch.
ponso
Review from Kickstarter
shipment set for 3.26
Mr. B
Review from Kickstarter
Just received my Slide Rule watch.
What can I say... WOW.
I have never had ANY kickstarter project exceed my expectations the way thus project has (once delivered). The packaging is simple yet thoughtful- classic. The inserts and instructions are top notch. The slide rule is stout and heavy weight (more for office than field, but im sure it'll withstand outdoor field use; small enough to fit in a shirt pockect.
The watch itself is also very robust. I chose the B30 design, and have to say I love the look, stainless band smooth, locking clasp is secure, and again, something working outdoors as an engineer should hold up. A little thincker and on the heavy side, but because i have to wear long sleeves in the field it shouldn't be an issue.
All in all a very well thought and executed project. I only wish I had bought more.
Caliper Timepieces Inc.
Review from Kickstarter
Thanks Dane - I love the video! It was fun to follow along. You demonstrate the screw-down crowns very well. I hope you enjoy the watch and figure out the slide rule!
Dane Basch
Review from Kickstarter
If you'd like, please enjoy my unboxing video of my new Caliper watch: https://youtu.be/uJUXGsUJBeA
Dane Basch
Review from Kickstarter
Just got my B30 watch. What else can I say but WOW! Excellent packaging, beautiful slide rule that I have no idea how to use, and an absolutely gorgeous watch. I am way way way beyond happen @Caliper! You've done very, very well.
ponso
Review from Kickstarter
salivating...
Dane Basch
Review from Kickstarter
Just got my UPS tracking number. Fantastic. I’ll be doing an unboxing video when it comes. It’ll be on YouTube. Come check it out. I’ll post a link.
Dane Basch
Review from Kickstarter
At least you're not shipping from Brazil...........hehehe.......
Dane Basch
Review from Kickstarter
Naw.....you're good. I'm sure that I'll be seeing mine by the end of the month. I'll be doing an unboxing and video review on it as part of my "duties" on the Kickstarter and Microbrand Facebook page. If you're on there look for it.
Caliper Timepieces Inc.
Review from Kickstarter
Hi Dane - it's the 12th but unfortunately I have not yet received the shipment. It was scheduled to be completed on the 6th but has been delayed until today. I'm told that it is on it's way now via air shipment so I should have it here in a few days. I'm very sorry for the delay.
Dane Basch
Review from Kickstarter
@Caliper.....well, here we are! On the edge of shipment. Good luck to you!
ponso
Review from Kickstarter
can we still change our choices? B.C I can't decide between the B/30/40! One is easier to read and one shows the inner workings. gah!!!
Dane Basch
Review from Kickstarter
@Caliper.......excellent. I look forward to this very much.
Caliper Timepieces Inc.
Review from Kickstarter
Hi Dane - yes we are still on target for Feb!
I hope to start shipping on the 12th of February - I will keep you posted.
Dane Basch
Review from Kickstarter
@Caliper.....or not?
Dane Basch
Review from Kickstarter
@Caliper....can you update on if we’re still on target for a February shipment?
Caliper Timepieces Inc.
Review from Kickstarter
Hi Dane, I've had a delay in getting the B3O sample. I'll share photos as soon as I can. Production is scheduled to be completed early in February, so we are still on track to ship in that month. We will be using UPS for all our shipping and you will all receive tracking numbers when the watches and slide rules go out.
Dane Basch
Review from Kickstarter
@Caliper: Do you have any updated photos of the B30 watch yet? And what method of shipping are you planning to use to ship to American addresses?
Dane Basch
Review from Kickstarter
To Caliper Timepieces, and all my fellow backers......Merry Christmas, Happy Hanukkah (me), and Happy New Year.
Dane Basch
Review from Kickstarter
Excellent. Look forward to it.
Caliper Timepieces Inc.
Review from Kickstarter
Hi Dane - samples of the other two models are on their way to me so I should have photos to post in an update in a few days.
Dane Basch
Review from Kickstarter
Do you have any updated pictures of the B3O watch? That one was my final choice, and I am anxious to see a picture of the final product.
Caliper Timepieces Inc.
Review from Kickstarter
Hi Dane - production is under way and the schedule remains the same as per update 4. We are still on schedule for Feb 2018. I will have new samples in a couple of weeks and I'll be sharing photos then.
Dane Basch
Review from Kickstarter
Been a while since there have been updates or information on the campaign. How's it going? We still looking at a Feb. 2018 shipment? Maybe sooner? Maybe? Any new details to share?
Caliper Timepieces Inc.
Review from Kickstarter
Hi Dane - the survey is still open as a few people have not yet responded. However, since over 80% of backers have made their selection, I have enough data to determine the required quantities of each model. The movements have been purchased and I've paid the deposit for the production run, so it is now under way. The survey will remain open for a while longer.
Dane Basch
Review from Kickstarter
Anything new going on up there? Been a while since any news has been reported.
Caliper Timepieces Inc.
Review from Kickstarter
Hi Dane I hope you weathered the storm without too much damage. The survey will go out today or tomorrow.
Dane Basch
Review from Kickstarter
Has the survey gone out yet? Due to Irma I was off line for a bit.
Caliper Timepieces Inc.
Review from Kickstarter
Hi Dane - I hope to get the survey out next week. I am working out some details on the models with text on the glass. The options have to be completely finalized before people make their selections. These will be posted in an update. So as not to hold anything up, we are proceeding with the purchase of the movements.
Dane Basch
Review from Kickstarter
Any word on when the selection survey will be sent out?
Dane Basch
Review from Kickstarter
@Carsten.......too right my friend. Would you happen to be a victim of another watch campaign who's maker has the initials FL? That was a horror show.
Dane Basch
Review from Kickstarter
It was a nail-biter for sure.....but wonderful the mark was hit. Looking forward to putting that B3O on my wrist!
Carsten
Review from Kickstarter
Congrats�� let's make this a successful project not waiting for 2 years like other ones�
Caliper Timepieces Inc.
Review from Kickstarter
Thank you all for supporting this campaign! It was a close call at the end but we made it!
Markus Jöbstl
Review from Kickstarter
With the last few hours counting down it seems like the watch will become a reality for sure. I am really looking forward to the production process and hoping for some pictures along the way. Many congratulations on sucessfull funding! Best regards - Markus
Chris Smith
Review from Kickstarter
I switched to the "pair of watches for my and my brother" pledge - so for anyone watching, there is a freed up early bird slot!
Zane
Review from Kickstarter
Congratulations! I've been checking at least once every day to see the progress, I'm happy to see we've made it over the goal and hope that it continues to rise!
ponso
Review from Kickstarter
congrats! I was nervous there for a bit!
Dane Basch
Review from Kickstarter
Let me be the first to post my congratulations! As I post this it appears that the campaign has hit 100% (although the money keeps fluctuating a bit). I am very happy for you folks. And happy for myself.....since it looks like I will actually get the watch!
Dane Basch
Review from Kickstarter
My mistake. I had November in my head from another campaign I'm backing.
Chris Smith
Review from Kickstarter
The estimated dates are just fine! I prefer somewhat conservative dates, as it usually indicates some sober thought is behind the delivery process, and also serves as a reminder that is not "buying" anything.
Mr. B
Review from Kickstarter
I too do not need to see the internal working of the watch and would perfer a B30 style but would like to have the D2B style face printing of the scale conversions at the 9 and 3 o'clock position.
Caliper Timepieces Inc.
Review from Kickstarter
Hi Dane and Chris - the estimated date has been Feb 2018 from the start. As a creator, I am unable to change these dates once the campaign is launched. i have put in a conservative delivery date as there are often unanticipated delays in production and quality control. I would not want to promise a Christmas delivery date.