Starrett Combination Square Insert - Manual (Page 2)

Assembling and Reconfiguring Your Combination Square
This tool was designed as a square that would move up and down a ruler blade
with precision, thus allowing a wide range of applications. The tool consists of a
blade with a machined groove on the center of one side and a square head with a
lockable assembly and specially designed bolt to engage the slot.
• When installing the blade into the head,
be sure to align the bolt with the groove.
• Look at the machined slot on the head
and note the position of the bolt.
• If the bolt is in the wrong position,
loosen the spring loaded lock nut, press
down and turn the post until the bolt
aligns with the blade slot, slide the
blade into the head and lock the nut.
• Follow the same procedure to attach
center and protractor heads.
• The blade has two or four graduation
types along its edges. To reverse the
blade and see different graduations,
loosen the nut, remove the blade, rotate
the bolt 180°, flip and re-insert the
blade, then lock the nut.
Applications: Combination Square with Rule & Movable Head
With 289C Clamp
Block & Scribe
Complete Combination Square Set includes
Blade/Rule, Square Head, Center Head,
Protractor Head & Case