Well, the doorbell range a few minutes ago and sorry for the delay in posting this but the UPS guy was very happy to get a cold bottle of water and a COKE.'
In my box was a perfectly received second version of the square all of you are talking about. Luckily for me I had my camera and a scale handy (I was making pickles).
So below are the images. The squares are made out of the same size rectangle of aluminum - same thickness. The weight difference is 92 grams - the rectangular one is heavier.
In one of the images I stacked one on top of another and it appears that the top web is weird but that is merely due to the tilt of one on top of another another and the clamp below.
from Peter's post it may not be obvious why you might want one, the other or both. Please let me try to explain:Reasons for choosing the PE version:
• permits referencing the opposite end AND front edge of the sheet being cut
• Retains all the benefits of the original GRS-16 Square
Reasons for choosing the original GRS-16 version:
• Ideal for conventional front edge referencing of cuts
• Smaller form factor for easier mobility, convenience in shop or job site
• Lowest weight on the tool belt
• Stores in FESTOOL Systainer 1 TL
Reasons for choosing both GRS-16 and GRS-16 PE
• Permits squaring both ends of longer rails for greatest accuracy
• Combination for greatest accuracy on any length workpiece or track
• Keep one in the truck and one in the shop