Start by scribing the 3/4-in. Height that defines the width of the clamp frame. Set the height gage to .750 in. Attach the scriber. Be sure that the scriber is sharp and properly installed for the height gage that you are using. Hold the wotkpiece and height gage firmly and pull the scriber across the work in a smooth motion. The height of the clamp screw hole can be laid out at this time. Refer to the part drawing and determine the height of the hole. Set the height gage at 1.625 in. And scribe the line on the end of the wotkpiece. The line may be projected around on the side of the part.