This gauge measures both pounds per square inch and kilograms per square centimeter. If the indicator were to point to 6.5 kilograms per square cm, approximately how many pounds per square inch would that equal? A gauge with kilograms per square centimeter on the outside and pounds per square inch on the inside. When the needle is pointing at 6.5 kilograms per square centimeter, it will be pointing between 90 and 100 pounds per square inch.