Starrett 647 dial comparator indicator with 0.0001" graduation for high-precision comparative measurements. Jeweled movement ensures accuracy and long service life. Suitable for inspection and quality control applications requiring fine resolution.

The Starrett 647 Dial Comparator Indicators offer a high degree of security and precision. They are based on a solid and well thought-out construction taking into account the latest technology. They are manufactured by the most up-to-date methods.

Features

• Rugged and simple unit construction with a universally fitting design
• The gear unit is constructed of a massive single bridge and plate assembly with a hardened stainless steel gear train
• All gear trains are fully jeweled for sensitivity, smoothness and life
• The case is light but sturdy, with a hardened, precision stainless steel rack that rides in bronze bushings, size Groups 0 and 1 indicators are of similar construction but smaller in size
• Hardened stainless steel bottom stems can be held in fixtures without cramping rack action
• Easy readability with the best, balanced style of graduation and number combination
• Balanced and tapered hands are easy-to follow
• Special non-shock mechanism is ideal for when an indicator may be subjected to repeated and excessive shocks
• Sharp bezel serrations for positive grip
• Unbreakable crystal, 3/8 in Dia stem
• Positive acting clamp locks bezel in position
• No-glare satin finish on case
• Interchangeable contact point and furnished with flat back
• Four screw holes for 90 deg rotation of back
• Direct acting compression spring eliminates side friction
• Hardened stainless steel rack, gears, spindle and pinions
• Effective non-shock mechanism, pinions and shafts of the movement are jeweled
• After removal of the safety cap and adjustment screw on top of the case, a safety cap prevents unintentional turning of the fine adjustment screws