Sigourney Tool Co. M-100 A4041 Sensitive Drilling Machine.

Unit is a Sigourney Tool Co. M-100 A4041 sensitive drilling machine. Sold by Pratt & Whitney.

This drill is in good cosmetic condition. It has not been tested but comes from a working environment..

he Sigourney Tool Co. M-100 A4041 is a precision sensitive drilling machine designed for high-accuracy drilling in laboratory, prototype, and light industrial applications. Built with the craftsmanship Sigourney Tool Co. was known for, this vintage drill press offers reliable control and smooth spindle action, making it ideal for delicate drilling tasks where precision is essential.

• Model: M-100 A4041

• Type: Sensitive drill press / precision drilling machine

• Spindle Travel (Z-axis): Approx. 2.5 in.

• Typical Spindle Speeds: Ranges available from 900 RPM up to 12,000 RPM (depending on pulley configuration)

• Applications: Precision drilling of small parts, research and development, prototyping, electronics, and light machining tasks

• Construction: Heavy, stable cast base with rigid column and sensitive feed for accurate depth control

The M-100 series was engineered for work requiring delicacy and accuracy beyond that of standard drill presses. Known for smooth quill action and fine feed control, the M-100 remains a sought-after machine among collectors, machinists, and research facilities.