I have been contemplating getting a 'Jailbird' for some time now. But what confuses me are the measurements in the specifications. I am not quite sure what the default device in the display image amounts to, so I'm not quite sure what to go by. I am largely unfamiliar with imperial measurements, being in Australia. I wish it could be displayed in XX.XX inches, instead of XX/3 quarters of XX/whatever. It would be nice if MM had a visual example of a completed model that shows it based on the dimensions selected, but there may be reasons not to I guess. What are the typical inside diameters of devices such as the A231 etc? When I tried this device (link)https://www.ebay.com.au/itm/2019-Ne...olor-A-/223613621936?var=&hash=item34106916b0, it was a very snug fit, but didn't cut off circulation. I would like to know roughly what the internal diameter of the gap at the bottom of the cage in the link is if anyone knows please. I have ordered custom devices before, and ended up purchasing the wrong size ones. If I am going to purchase a JB, I want to get it right the first time obviously. Cheers.
I guess no info is available, and my unfamiliarity with obscure imperial measurements will deter me from looking into getting one.
Have you tried using an online measurement conversation? Loads of free sites will do the math for you.
I found the following in 30 seconds on the web. You could also contact the company directly for support. You’ll find custom manufactures like Mature Metal are worth it because of their customer support. It isn’t all about the website. Mark from MaleChastityNow used to have conversions in his web-form drop downs. here’s a link to table in PDF https://www.engineeringtoolbox.com/docs/documents/751/inches_to_mm_conversion.pdf This table didn’t copy all that well. Inches Metric Fractional Decimal mm . 0.0039 0.1000 . 0.0079 0.2000 . 0.0118 0.3000 1/64 0.0156 0.3969 . 0.0157 0.4000 . 0.0197 0.5000 . 0.0236 0.6000 . 0.0276 0.7000 1/32 0.0313 0.7938 . 0.0315 0.8000 . 0.0354 0.9000 . 0.0394 1.0000 . 0.0433 1.1000 3/64 0.0469 1.1906 . 0.0472 1.2000 . 0.0512 1.3000 . 0.0551 1.4000 . 0.0591 1.5000 1/16 0.0625 1.5875 . 0.0630 1.6000 . 0.0669 1.7000 . 0.0709 1.8000 . 0.0748 1.9000 5/64 0.0781 1.9844 . 0.0787 2.0000 . 0.0827 2.1000 . 0.0866 2.2000 . 0.0906 2.3000 3/32 0.0938 2.3813 . 0.0945 2.4000 . 0.0984 2.5000 7/64 0.1094 2.7781 . 0.1181 3.0000 1/8 0.1250 3.1750 . 0.1378 3.5000 9/64 0.1406 3.5719 5/32 0.1563 3.9688 . 0.1575 4.0000 11/64 0.1719 4.3656 . 0.1772 4.5000 3/16 0.1875 4.7625 . 0.1969 5.0000 13/64 0.2031 5.1594 . 0.2165 5.5000 7/32 0.2188 5.5563 15/64 0.2344 5.9531 . 0.2362 6.0000 1/4 0.2500 6.3500 . 0.2559 6.5000 17/64 0.2656 6.7469 . 0.2756 7.0000 9/32 0.2813 7.1438 . 0.2953 7.5000 19/64 0.2969 7.5406 5/16 0.3125 7.9375 . 0.3150 8.0000 21/64 0.3281 8.3344 . 0.3346 8.5000 11/32 0.3438 8.7313 . 0.3543 9.0000 23/64 0.3594 9.1281 . 0.3740 9.5000 3/8 0.3750 9.5250 25/64 0.3906 9.9219 . 0.3937 10.0000 13/32 0.4063 10.3188 . 0.4134 10.5000 27/64 0.4219 10.7156 . 0.4331 11.0000 7/16 0.4375 11.1125 . 0.4528 11.5000 29/64 0.4531 11.5094 15/32 0.4688 11.9063 . 0.4724 12.0000 31/64 0.4844 12.3031 . 0.4921 12.5000 1/2 0.5000 12.7000 . 0.5118 13.0000 33/64 0.5156 13.0969 17/32 0.5313 13.4938 . 0.5315 13.5000 35/64 0.5469 13.8906 . 0.5512 14.0000 9/16 0.5625 14.2875 . 0.5709 14.5000 37/64 0.5781 14.6844 . 0.5906 15.0000 19/32 0.5938 15.0813 39/64 0.6094 15.4781 . 0.6102 15.5000 5/8 0.6250 15.8750 . 0.6299 16.0000 41/64 0.6406 16.2719 . 0.6496 16.5000 21/32 0.6563 16.6688 . 0.6693 17.0000 43/64 0.6719 17.0656 11/16 0.6875 17.4625 . 0.6890 17.5000 45/64 0.7031 17.8594 . 0.7087 18.0000 23/32 0.7188 18.2563 . 0.7283 18.5000 47/64 0.7344 18.6531 . 0.7480 19.0000 3/4 0.7500 19.0500 49/64 0.7656 19.4469 . 0.7677 19.5000 25/32 0.7813 19.8438 . 0.7874 20.0000 51/64 0.7969 20.2406 . 0.8071 20.5000 13/16 0.8125 20.6375 . 0.8268 21.0000 53/64 0.8281 21.0344 27/32 0.8438 21.4313 . 0.8465 21.5000 55/64 0.8594 21.8281 . 0.8661 22.0000 7/8 0.8750 22.2250 . 0.8858 22.5000 57/64 0.89063 22.6219 . 0.9055 23.0000 29/32 0.90625 23.0188 59/64 0.92188 23.4156 . 0.9252 23.5000 15/16 0.93750 23.8125 . 0.9449 24.0000 61/64 0.95313 24.2094 . 0.9646 24.5000 31/32 0.96875 24.6063 . 0.9843 25.0000 63/64 0.98438 25.0031 1 1.000 25.40 . 1.0039 25.5000 . 1.0236 26.0000 . 1.0433 26.5000 . 1.0630 27.0000 . 1.0827 27.5000 . 1.1024 28.0000 . 1.1220 28.5000 . 1.1417 29.0000 . 1.1614 29.5000 . 1.1811 30.0000 . 1.2205 31.0000 1 1/4 1.2500 31.7500 . 1.2598 32.0000 . 1.2992 33.0000 . 1.3386 34.0000 . 1.3780 35.0000 . 1.4173 36.0000 . 1.4567 37.0000 . 1.4961 38.0000 1 1/2 1.5000 38.1000 . 1.5354 39.0000 . 1.5748 40.0000 . 1.6142 41.0000 . 1.6535 42.0000 . 1.6929 43.0000 . 1.7323 44.0000 1 3/4 1.7500 44.4500 . 1.7717 45.0000 . 1.8110 46.0000 . 1.8504 47.0000 . 1.8898 48.0000 . 1.9291 49.0000 . 1.9685 50.0000 2 2.0000 50.8000 . 2.0079 51.0000 . 2.0472 52.0000 . 2.0866 53.0000 . 2.1260 54.0000 . 2.1654 55.0000 . 2.2047 56.0000 . 2.2441 57.0000 2 1/4 2.2500 57.1500 . 2.2835 58.0000 . 2.3228 59.0000 . 2.3622 60.0000 . 2.4016 61.0000 . 2.4409 62.0000 . 2.4803 63.0000 2 1/2 2.5000 63.5000 . 2.5197 64.0000 . 2.5591 65.0000 . 2.5984 66.0000 . 2.6378 67.0000 . 2.6772 68.0000 . 2.7165 69.0000 2 3/4 2.7500 69.8500 . 2.7559 70.0000 . 2.7953 71.0000 . 2.8346 72.0000 . 2.8740 73.0000 . 2.9134 74.0000 . 2.9528 75.0000 . 2.9921 76.0000 3 3.0000 76.2000 . 3.0315 77.0000 . 3.0709 78.0000 . 3.1102 79.0000 . 3.1496 80.0000 . 3.1890 81.0000 . 3.2283 82.0000 . 3.2677 83.0000 . 3.3071 84.0000 . 3.3465 85.0000 . 3.3858 86.0000 . 3.4252 87.0000 . 3.4646 88.0000 3 1/2 3.5000 88.9000 . 3.5039 89.0000 . 3.5433 90.0000 . 3.5827 91.0000 . 3.6220 92.0000 . 3.6614 93.0000 . 3.7008 94.0000 . 3.7402 95.0000 . 3.7795 96.0000 . 3.8189 97.0000 . 3.8583 98.0000 . 3.8976 99.0000 . 3.9370 100.0000 4 4.0000 101.6000 . 4.3307 110.0000 4 1/2 4.5000 114.3000 . 4.7244 120.0000 5 5.0000 127.0000 . 5.1181 130.0000 . 5.5118 140.0000 . 5.9055 150.0000 6 6.0000 152.4000 . 6.2992 160.0000 . 6.6929 170.0000 . 7.0866 180.0000 . 7.4803 190.0000 . 7.8740 200.0000 8 8.0000 203.2000 . 9.8425 250.0000 10 10.0000 254.0000
Thanks for posting those comparisons. It'd be nice if MM adjusted their webpage to have an option to display metric measurements in addition to imperial. It's almost like another language to me.
I have a queens keep from MM. You can buy from them sizing rings. There basically O rings that you can try on to get your measurements correct instead of using string ans such. Its much more accurate. In fact I wore the base ring for a couple of days. They have a measurement guide that is pretty good for a starting point. Its still hard to hit the nail on the head on the first try and there will always be adjustments necessary. They get the adjustments done quickly. One thing they don't mention is on there cage length. Order it 1/2 inch shorter than they tell you because the cage normally slides down a bit. As far as conversions google it.
Yeah. Well. Hope the conversion table helps. The conversion is defined as 25.4 mm to 1 inch. Rounding... 1/8” is 3 mm. 6.0” is 15-1/4 cm ;-) 2” is 51 mm 1-3/4” is 44.5 mm 1-1/2” is 38 mm Perhaps if you contact Mature Metal, you can mention your recommendation in passing. Now, for real fun, try translating between jewelry gauge sizes, imperial and metric!
Maybe my phone is fancy, but if I put in a measurement, the word to...a ton of options spring up on google, you can pick one, and boom, instant answer. You could also try physically measuring instead of eyeballing what you think it might be, which I highly recommend.
Email and tell them they're losing a potential sale because they don't give the measurements in metric. They can't fix what they don't know is a problem. (which is true of most things, not just websites)
we are always happy to help convert your measurements, just send us an email and I will do the work for you.
(If this is inappropriate/off topic, feel free to move/delete). At the moment, it is hard to determine exactly which size is right for me, as I experience discomfort in cold conditions with significant growth (to the point where I have to immediately remove a 45mm ring). I cannot draw the line at say 43mm, as this too will become uncomfortable at times. There seems to be no set radius for a ring at this stage, as my requirements can go from a 40mm ring right up to one of about 48mm on very rare occasions. If I experience severe discomfort, then I have to remove the device. I am curious as to whether any other users of this forum has a similar problem. I have also noticed that short open cages are not really any good for me, due to leftovers when I wake up.
@MT206 I don’t know if you realize, but you were lucky enough to have the company mature-metal respond to this thread. Go email them as they asked you to! I had said the best part of going with a custom maker is their customer service. They have many models with various amounts of coverage to meet your needs. My experience is with another company, but they added extra rods. Also, you can always purchase additional base-rings. There’s actually someone to talk to behind the website.
Be aware that the thickness of the base ring is quite important for comfort as well. A thinner ring will have greater point pressure, and a thicker ring will spread the load better. I have two base rings that are exactly the same internal diameter, but the thicker ring is so much more comfortable.
I've actually done some calculations, and with the price amounting to around $600 in AUD, I'll have to watch every cent I spend. After some analysis, I think I've gotten close to the correct size. But I don't want to repeat the error I made with the 'Cherry Keeper'. MM have been ok in regards to answering questions so far, and I have managed to converted the imperial measurements to something I'm more familiar with.