The largest Robertson I have is a #4, a solid black handle. The yellow is a 0, green is a 1, red is a 2 and 3 is ?. For really large ones, I have used a tuning lever tip wrench. John M. Ross Windsor, Nova Scotia, Canada jrpiano at win.eastlink.ca ----- Original Message ----- From: Jurgen Goering To: pianotech at ptg.org Sent: Saturday, January 20, 2007 6:33 PM Subject: Re: square drive screws. Old Canadian pianos often have Robertson plate screws with a large square recess, almost 1/4". I am looking for a source for screwdrivers for these screws. Does anyone have any ideas? Who can custom make square tip drives or bits? Jurgen Goering Piano Forte Supply (250) 754-2440 info at pianofortesupply.com http://www.pianofortesupply.com -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20070120/589701c8/attachment.html
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