THE ROBBINS-XLO MAGNA-SINE MODEL A-10 MAGNETIC CHUCK, MANUFACTURED BY ROBBINS, IS A TYPE MAGNA-SINE TOOL. THIS MODEL A-10 CHUCK MEASURES 12 INCHES IN LENGTH, 6 INCHES IN WIDTH, AND 6 INCHES IN HEIGHT. IT OFFERS A HIGH DEGREE OF PRECISION, INDICATED BY A SQUARE AND PARALLEL MEASUREMENT OF 0.0003 INCHES.