Mackin Manufacturing

We manufacture the one and only Penguin Pocket ECG Caliper. Our calipers were invented by well known cardiologist Robert A. Mackin, 20 years ago. His idea was developed after using the old style calipers, he noticed they were heavy in weight, they could not be carried in your pocket, they were very easy to lose and he had to replace them frequently.Today we have the Pocket Penguin Caliper. This caliper is designed to be clipped in your pocket with a brass powder coat cap that is not only useful to prevent accidental punctures by the caliper tips, the cap also gives a great sophisticated look. On this cap we have the capability to engrave your name, the logo of your company or lately for educational purposes we are engraving the interval scale. The scale is practical in the daily use for cardiologist, physicians and nurses.