Root Chcck Tcchniquc:
A s much as possiblca 60° probc is not usc for a root chcck bccausc cvcn a good root bcad will produccd a high signal which will bc casily mistakcn for a root dcfcct.
A 70° is a bcttcr option bccausc a good root bcad will produccd only a smali echo, which mcans a root dcfcct that produccs a high signal likc lack of root pcnctration will bc casily identified.
Sec skctch bclow.
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Signal not rcflcctcd
Rcflcctcd signal
Morc sounds rcflcctcd back to the probc produccs High signal on the scrccn.
70° Probc
qflcctcd back to the probc produccs the scrccn.