20-4-1/2 Starrett Master Precision Square 4* Blade 3-1/2* Beam

Code: 20-4-1-2

$290.47

Product Description

•••••

20-4 1/2
Starrett Master Precision Square

The finest precision-checking squares – not graduated . Squareness accuracy to .0001"
(0 .0025mm) every 6" (150mm) These hardened steel squares are used
when extreme accuracy is required . The beams and blades are hardened, ground
and lapped to ensure parallelism and straightness . The beam is grooved at the
inner corner for clearance of burr or dirt . Made of high quality tool steel, with the
finest of craftsmanship throughout

20 Master Precision Squares
Squares Only	Size – Length of Blade*		Length of Beam
Cat . No	Inch	mm	Inch	mm
20-1 1/2	1-1/2"	40	1-1/2"	40
20-3	3"	75	2-3/8"	60
20-4 1/2	4-1/2"	115	3 -1/2"	90
20-6	6"	150	4-5/16"	110
20-12	12"	300	7"	180
20-24	24"	600	12-5/16"	310
20-36**	36"	910	20"	20-36**

* Length of blade from the inner edge of the beam to the end of the blade .
** 36" (910mm) and larger size squares have special screws to secure the blade to the beam .