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specIAl functIon IndIcAtors

649 spIndle squAres ™ feAtures And specIfIcAtIons
The 649 Spindle Square offers accuracy, convenience and significant time • Fully assembled with two AGD Group 2 dial indicators
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saving with the common shop task of tramming the head of a vertical milling • Patented design
machine. This must be done regularly to ensure squarness and perpendicularity • Solid steel body construction with durable black oxide finish
IndIca tors and GaGes of tramming with a dial test indicator. • Approximately 4lbs with custom case
between the spindle and work surface.
• Ground gaging surface
The spindle square is easier to use and more precise than the traditional method
• 3/8" inch shank diameter
usInG tHe spIndle squAre
• 4" (100mm) between contact points
After setting the spindle square indicators to "0" on a surface plate, place the
• Approximately 6-3/4" (172mm) wide and 5" (140mm)
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Spindle Square into the collet of the milling machine and bring the head down to
from the top of shank to the end of the contact points
the table until both indicator needles have rotated approximately one full rotation.
The needles do not need to point in the same direction. Identical numerical
readings, not the needle positions, indicate squareness.
To tram the milling machine, adjust the machine per normal procedures until
both indicators read the same numerical value. After setting the X-axis, repeat
the same procedure with the Y-axis.

649 Spindle Square
Cat. No. EDP Range Graduation Dial Reading
649-1 52080 .250" .001" 0-50-0
649-5 52081 .125" .0005" 0-25-0
649-1M 52082 2.5mm 0.01mm 0-50-0

649-1

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