anyone know what a 75-3 is?

In the beta for a crack climb i'm hoping to try out tomorrow, the description and suggestion in the guide is to bring "doubles of 75-3"  Anyone know what this is referring to?  
- i'm only a year into trad, so I'm guessing it's something obvious.  If you know, please let me know.
Thanks much

BD camalots, from #0.75 (green) through #3 (blue).

thanks!  

Just Incase you don’t know

.75 = green c4
1 = red c4
2 = yellow c4

​be safe out there. 

It could also be referring to the size of the crack in inches.  As in bring gear from 0.75"-3".  Many guide books do this to avoid singling out a specific brand of cams like BD.  A 0.75 camalot is bigger than 0.75 inches.  0.75 inches would be about a 0.4 camalot/yellow alien.  

Mike McLwrote: It could also be referring to the size of the crack in inches.  As in bring gear from 0.75"-3".  Many guide books do this to avoid singling out a specific brand of cams like BD.  A 0.75 camalot is bigger than 0.75 inches.  0.75 inches would be about a 0.4 camalot/yellow alien.  

usually the guidebook will specify in the introduction what standard it's using. unless you're in europe, the de facto standard for sizes are black diamond sizes, which are now shared by DMM and Wildcountry as well. given that it says .75-3, and not cams from half an inch to three inches or whatever, you can safely assume the size referenced is the C4 standard

yikes 

Cesar Cardenaswrote: yikes 

MP contribution of the year

I've seen inches a lot more often than BD sizes on topos.

Totem has been smart and named their cam sizes according the the crack reference size (middle of the optimal range of the cam). Which is funny because they're European but using inches.

The only BD that matches the reference size is the #2 = 2"
Totems make more sense, e.g. #1.5 Red totem = 1.5". While BD calls this a #1.

Where are you climbing around NYC these days? Here for a few weeks visiting family and need some local beta!

I prefer "25 or 6 to 4" to "75-3":

Lone Pinewrote:

MP contribution of the year

yeah sorry, I'm really only on the forums for the chuckles I can get between classes/work/etc.

Plus at that point, multiple people had already answered the question.

Cesar Cardenaswrote:

yeah sorry, I'm really only on the forums for the chuckles I can get between classes/work/etc.

Plus at that point, multiple people had already answered the question.

i thought the same thing haha, how do you climb trad for a year and ask this

Whisk3rzz 1wrote:

i thought the same thing haha, how do you climb trad for a year and ask this

Thanks for all of the responses.  Happy to provide some entertainment as well.  Had primarily climbed at the gunks until it closed earlier this year.  Neither guidebook included what gear was needed.  This was a first for me.