The Newman ST1E Meter is the only meter in the world with all stainless steel hardened gears, shock-proof industrial grade internal gear movement and all jewel sapphire bearings, giving you a screen tension meter of exceptional quality that will last longer and produce consistent readings every time. All other mechanical meters have non-compound softer brass gears and bushing, greatly reducing their shock-resistance, long-term accuracy and life. The crystal is shatterproof and curved to avoid glare and the heavy-duty protective aluminum housing makes for the most durable meter made anywhere.