This is Volume 1 Ruby who is 1.57 m
1.57 / 969 = .00162022703 m
.00162022703 x 1485 = 2.4060371517 m
2.4060371517 / 454 = .0052996413 m/px
.0052996413 x 278 = 1.47330028232 m
.0052996413 x 18 = 0.0953935434 m
.0052996413 x 50 = 0.264982065 m
.0052996413 x 10 = 0.052996413 m
.0052996413 x 53 = 0.2808809889 m
.0052996413 x 128 = 0.6783540864 m
.0052996413 x 42 = 0.2225849346 m
.0052996413 x 64 = 0.3391770432 m
.0052996413 x 40 = 0.211985652 m
.0052996413 x 32 = 0.1695885216 m
.0052996413 x 84 = 0.4451698692 m
1.47330028232 / 445 = .00331078715 m/px
.00331078715 x 17 = .05628338155 m
.00331078715 x 9 = .02979708435 m
.00331078715 x 2 = .0066215743 m
Okay, so now that we got the numbers, we can get volumes:
.05628338155 x .0953935434 x .264982065 = 1420 cm^3
.05628338155 x .052996413 x .2808809889 = 838 cm^3
.05628338155 x .6783540864 x .2225849346 = 8498 cm^3
.02979708435 x .3391770432 x .211985652 = 2142 cm^3
Last on is a triangular prism, so using this calculator gives us 249.9502cm^3
1420 + 838 + 8498 + 2142 + 249.9502 = 13147.9502 cm^3
Density of steel is 8.05 g/cm3
13147.9502 x 8.05 = 105840.99911 g, 105.84099911 kg
Due to how its spinning the center of gravity of Crescent Rose sword would be on the very end.
In all of the scenes with Ruby spinning Crescent Rose rapidly, it immediately cuts to being a full blur of motion, so we'll use 34.3 m/s as a lowball
2.4060371517 / 2 = 1.20301857585 m
Ac = v^2/r
Ac = (34.3)^2 / 1.20301857585
Ac = 977.948324006 m/s^2
977.948324006 x 105.84099911 = 103507.027691 Newtons = 10554.77942938825 kg
Multiply it by 2 as she does this with one hand gives us 21109.5588588 kg, Class 25
This is something that she does casually in virtually every fight shes in.