Deepol - A fast way of measuring accurately the true quill travel by reading it on a precision long travel dial indicator.*Install In Seconds*Clamps Securely Without Machine Changes*Covers the 5" Quill Travel*Does Not Interfere With Fine Feed Wheel*Speeds Operations*Eliminates Errors*The DEEPOL Consists Of Two Components1. One Dial Indicator Clamp that mounts on the 1-1/2" diameter quill stop (positively solid with the quill) by means of only one 1/4" screw. This component can stay permanently mounted. A 3/8" diameter slotted hole can receive all standard indicator stems.2. One Adjustable Rod Clamp Assembly that mounts on the machine quill housing by means of a pressure screw fitted with a 1" diameter knurled knob.This assembly is readily in position and can be removed when not needed. There is no interference with the standard parts or other functions of the mill...