How to use the Nifty jig on a truss roof

...Using the 50mm shoulder on each side of the jig set your first truss 50mm in from the gable end. Fix to wall plate, plumb up the truss and secure in place.

...If possible set up your last truss and repeat this process.

...Secure a temporary unmarked external brace across the first and last truss and fit a string line. If a bracing does not reach the last truss then fit an intermediate truss or a longer bracing if possible.

...Bring over your second truss and hook the Nifty jig over the first and second trusses binding them in position. The jig is to be supported by the temporary external brace or temporary nails tacked into trusses to stop it sliding down the truss.

...These trusses are now in the correct position at 600mm centres and fully supported by the jig.

...Pull the second truss to the string line and tack a nail into the temporary brace when in position. The truss is now supported by the bracing.

...Remove the jig and place over both trusses at wall plate level to obtain the correct 600mm centre. This truss can now be fixed to wall plate.

...Repeat this process at the opposite side of the roof (front or back) that does not have the string line fitted.

...The first two trusses are now set at 600mm centres.

...Repeat this process for the remaining trusses.

...Once temporarily external braced use the Nifty jig to fit all internal unmarked permanent longitudinal  bracing.

...Start from truss one and use the 50mm shoulder on the jig to slide your ceiling level bracing flush to match the 50mm overhang at the gable end. This ensures your bracing will butt up to the gable wall once built. This eliminates the process of flying bracing through and going back plumbing up and cutting off afterwards. This process can be repeated on all longitudinal bracing at all levels the gable ends. 

...The 50mm shoulder on the jig can also act as a spacer between truss and block work to keep the truss straight and a 50mm gap constant all the way down the gable end.

...Work from the first to the last truss hooking the jig over the trusses while fixing through bracing.

...The jig can be used as a hook to push and pull the trusses into place so there is no need to use other tools such as a hammer or even a nail gun to knock them into position as you normally would.

...Repeat this process on all longitudinal bracing within the roof ensuring you work in the direction of the first to the last truss.