I’ve been liking the Proto torque wrench 
<https://www.zoro.com/proto-dial-torque-wrench-drive-size-38-in-j6177f/i/G1663663/?q=G1663663>
 I purchased from Zoro a couple years back. I often wrap the head in masking 
tape to protect the roofing finish when torquing S-5 clamps due to the limited 
distance you end up with to the finish roof material  especially if the 
standing seam is tilted at an acute angle on set screw side. I use the same 
wrench for the Ironridge clamps. Also, surely you’re specific to which clamp 
you’re selecting but there’s definitely a few clamps that are more universal 
than others and when the roof profile allows I always select the S-5-N over 
some of the others. That little return profile hook is key to a successful bite 
without trying to walk up as it tightens. I see it has also been improved again 
with an angled set screw to eliminate the tilted seam headache I spoke about 
above. Bonus!

Nick



> On Jun 13, 2021, at 8:40 AM, Jason Szumlanski 
> <[email protected]> wrote:
> 
> Does anyone have a good recommendation for an easy to use model on the roof? 
> My cheap one finally broke and it was hard to read anyway. 
> 
> Or should I bite the bullet and get a calibrated impact driver?
> 
> Or both?
> 
> Jason Szumlanski
> Florida Solar Design Group
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