Profile: Jacoby Tarbox deals with sellers and buyers of measuring instruments. We stock sight flow indicators and sight windows including ANSI, teflon & tefzel lined, FM approved dual-window, armored, full-view, threaded window and low-flow gaseous models. All popular sizes and materials of construction are available. Our products are designed with flanged, threaded & special connections, as well as rotator, flapper, drip-tube or plain indicator styles.