Original oil and gas trade magazine vintage ad for MARTIN-DECKER CORPORATION of Long Beach, CA. Drilling Control for Medium Sized Rigs. The low cost type FS weight indicator now equipped with the famous Sensater for greater accuracy and sensitivity. The Sensater realizes every weight change no matter how small and relays it instantly to the Indicator mounted conveniently in front of the driller. Extra accurate, sensitive, dependable. This unique 1959 old oilfield petroleum drilling industry equipment magazine advertisement would display beautifully matted and framed. Nice graphics.