Quatro Wood best feet

@tomic601 there is Realistic Radio Shack Analog in good condition listed, is it same as RS  RS Analog?
https://www.ebay.com/itm/Realistic-Radio-Shack-Sound-Level-Meter-w-case-Cat-No-33-2050-Vintage/16342...

zee that is the one! 9v battery required

@tomic601 Sure will grab it, Thanks!
@ctsooner RV just replied that both 1.5 or 3.0 granite is OK as long as compensate for the tilt, time and phase aligned. Guess you can stay with what you have, that will also make me easier to find a pair now. 2 inch is just rare to find.

thanks so much. Yes, Rutan (NJ Dealer) just told me that 3" is fine. I thought that's what Richard originally told me to get.  I'm excited.

@ctsooner Wondering where did you order your 3". my local granite shop asking price is way too high, so far lowest price I able to find online for 3" granite is here: 
https://www.grizzly.com/products/Grizzly-18-x-24-x-3-Granite-Surface-Plate-No-Ledge/G9654
but the shipping cost to my door will be even higher than the granite price:(