Blake Manufacturing is the original manufacturer of this unique CoAxial Indicator Centering device that easily locates the center of your work piece. Mr. John Blake filed his patent in 1955 & a couple years later (1957) US Patent Number 2814124 was successfully issued! Soon thereafter Blake Manufacturing was born! Today, most machinists know Blake Coaxial Indicators as the Premier Quality Brand for this type of CoAxial Indicator Centering device.
The BLAKE COAXIAL INDICATOR provides a simplified method for centering a workpiece or fixture on HORIZONTAL or VERTICAL machines, EXTERNAL or INTERNAL diameters and also with N/C, EDM and other hard-to-turn spindles.
The face of the indicator remains stationary in any desired position while the machine spindle rotates, thus leaving the operator with both hands free to accurately position the machine table by coordinated movement of the table positioning controls while observing the indicator hand reaction. (Indicator hand travel diminishes as location error is reduced to a point where the hand stands still, indicating coaxial alignment of the diameter being checked with the spindle axis)
By using the COAXIAL INDICATOR with the machine spindle running, exact operating conditions are more nearly simulated for the centering operation since the influence of power transmission, lubricant flow, bearing characteristics and torque are integrated into the indicator reading.