Decelerometer brake testing?

Scoff:
I’ve a 7.5t lorry that I intend doing the 13 weekly checks on myself,is the Decelerometer type of testing good enough for this?

Tia Scoff…

I wouldn’t bother ,at approx £10 per axle for a roller brake test every 13 weeks it’s not expensive and far better than the taporley metre .