I have -8.75 shall I get -8 or -9?
107885
Go higher! under water there is less visibility, so anything that gives you the edge, I would go for... Anyway there is some eye adjustment at any point and at that level half a Dioptric is almost negligible (my unprofessional opinion)
107886
I would go down with a prescription because you would not want to feel dizzy because it is too powerful for your eyes. These did not work well for my daughter for competitive swim though. They leaked, just an FYI
107887
My daughter's prescription is -7.0 in one eye and -7.25 in the other. I purchased the -7.0 for her and they work great. For you I bet that the 9 would be better as you are already very nearly there at -8.75.
146159
http://lmgtfy.com/?q=what+is+the+difference+between+000+and+0%3F+what+is+the+difference+between+1+and+1A%3F+
1354321
Depends on what RPM your running it at. In general it's very quite 8/9 depending on what your scale is. At low RPM which us most of the time, you won't know it's on.
878180
They were trying to say 7.4 - 22.4. Don't forget to calibrate this properly! It scares you when you don't haha
818087
The resolution will be less, as I understand reading from other post, there is a table to show how much, I am in the same position with a 750
1220753
I have the 0.7, and absolutely yes. I've written multiple essays and exams with it. The 0.5 and the 0.7 are the same on the outside, only difference is the lead.
781534
:Mine did well at +15 but I can't say about that cold. The problem is they are randomly selected from 60 species. You don't know what you will get. I wouldn't risk it.
1791432
Start with the lowest and move up from there. You want to use as little "force" as necessary to correct the behavior.
1594602
I was confused myself when I was ordering this item. It is 1.75 as shown in the title.
1719250
Be very careful about changing your PH. Do it in little increments . If it's at 7 just leave it at that
1544378
I have never used anything below 6 myself and usually 8 is the highest I can tolerate. My guess is 1 is very low and almost unperceivable and 9 would be extremely hot and should probably be avoided unless you can handle the temperature. This pad does deep heating so I suggest you start out at 5 or 6 and determine where to go from there
1527664
Hi,In my opinion 7/8 will be fine.My daugther is 5 years old and I bought 4/6.
1496027
Lisa here are the numbers on the comparison chart of the container, it reads. 4.5, 5.0, 5.5, 5.75, 6.0, 6.25, 6.5, 6.75, 7.0, 7.25, 7.5, 8.0, 8.5, 9.0. Hope that helps.
856514
Above 5 L/M are; 6, 8, 10, 15 and 25. There is no 7 or 9 or anything between the higher numbers, but really, that would be too fine of a division to be useful.
960178
I'm having difficulty recalling as I use mine only at 0 deg. --- but it seems as if the choices were indeed only 0 and 90. EDIT: based upon consensus, I'm guessing that my previous comment is not correct!
1811742
thanks a lot. unfortunately I need a. .....673.... not a. ..273.... kindest rgds
49300
You need to know your glasses prescription. If you're nearsighted, (need correction for distance sight your rx will be a negative number. The lenses come in 0.5 increments. For example I have a -3.75 correction. Since it is in between correction options I ordered a -3.50. (If your in between order the lesser strength). If you are far sighted the correction will be a +.(ie reading glasses). Hope that helps.