I found one of the older "mall-quartz" bargains and after about an hour on the computer, copier and the trusty X-Acto, I have a REAL poor-mans "Panny"..all of 46mm across, as well...I am quite surprised how legible it is without the minute indices, and I will next make a locking cam for the crown I have been trying to create as a new idea...no better place to try it out than something worth about $20 ...
Cheers
Rich