Used to hold apparatus at a fixed 90° angle near the lab frame where no adjustment is required after set-up. Choose single adjustment style for standard use where one prong or “finger” is adjusted using a wing nut, while the other prong remains stationary or for a more versatile clamp choose the dual adjustment style. Utilizing thumbscrews, both prongs are easily adjusted over a wider range. Offered in either stainless steel or nickel plated zinc. Supplied with non-slip vinyl sleeves or for temperatures above 212°F (100°C), fiberglass covers.