[HBR] HBR-16 / Eddystone Dial Calibration?

[Niel and Beth Wiegand]

I'm reworking Morry Weinschenker's (K3DPJ) "barn" HBR-16 (
http://www.io.com/~nielw/hbr16/index.html ). This receiver has the
Eddystone dial. The design includes a crystal calibrator but I see no
provision to tweek the calibration point from the front panel. Is
something built into the Eddystone dial that I missed or is the HBR-16 /
Eddystone Dial calibrator for initial alignment only?

73,
Niel - W0VLZ
http://www.io.com/~nielw/wa5vlz.htm