Neck Wall Uniformity Adapter

Instructions

• Remove the right side roller block from the Concentricity Gauge and set it aside.
• Insert the mandrel that corresponds to the caliber of the cartridge you wish to check into the adapter and tighten the thumb screw.
• Place the adapter in the channel of the Concentricity Gauge base, so that it is about one inch to the right of the drive wheel, as shown in the drawing.
• Center the indicator tip on the mandrel as shown in the drawing and lower the indicator until the tip is touching the mandrel.
• Zero the indicator.
• With the drive wheel raised, slide a case onto the mandrel, under the indicator tip.
• Slide the left roller block, with stop pin, into position.
• With the base of the case resting on the roller block and contacting the stop pin, note the location of the indicator tip.
• The position of the roller block may be adjusted until the indicator tip is at the desired neck location.
• Check to make sure that the case is horizontal.  If it is not, the height of the mandrel should be adjusted.
• The mandrel height is adjusted by loosening the thumb screw and sliding the mandrel block up, or down on the pins as needed.  Tighten the thumb screw after adjustment.
• Remove the case without changing the placement of the adapter or roller block to check that the indicator tip is still centered on the mandrel.
• Replace the case.