Ditloids

[trfcfan]

32 B on the S

37 DCS by SRB

46 OP in the P

57 PFD in a R

78 P of N in A

[UncleMeleager]

I reckon this is 57 Point 4 Degrees in a Radian, which is slightly out - the true value is 57.29578 degrees.

Unless someone can think of another "PF" that works better.

[UncleMeleager]

Could 37 be something to do with 37 Degrees Celcius ie "normal" human body temperature?

Cannot think what "S" and "SRB" are, though.

[trfcfan]

Thanks for your efforts, I have been working on SRB standing for Sir Richard Branson, but I could be way off! The radian answer sounds good though. Cheers.

[trfcfan]

78 Percent of Nitrogen in Air