Starrett 696Z Crankshaft Distortion Dial Strain Gage with 696B Balancing Attachment

The Starrett 696Z Crankshaft Distortion Dial/Strain Gage is a professional-grade inside measuring tool designed for inspectors and engineers who need to check the distortion of engine shafts, crankshaft webs, and frames without dismantling the engine. Compatible with diesel engine shafts and center crankshafts on virtually any engine or compressor, this strain gage delivers reliable bearing alignment and shaft deflection readings with minimal downtime.

Comparison readings taken at the top and bottom positions reveal misalignment of the cylinder and frame — conditions that lead to localized over-stress and eventual cracking of the frame neck. The 696B Balancing Attachment is included and can be adjusted to maintain the face of the indicator upward or in any desired position, making it ideal for applications where the crank is turned while the gage remains in place.

Key Features:

• Measures crankshaft web distortion as a direct indicator of misalignment or excessive bearing wear
• Measuring range of 2-3/8" to 18" (61–458mm) when used with the included rods and extension
• Dial indicator movement of approximately 5/32" (4mm)
• Graduation of 0.001" with a 0-20-0 balanced dial reading
• Range per revolution: 0.040"
• Dial size: 1.450" with a movable bezel to adjust dial in relation to the hand
• Non-breakable dial crystal for durability in field use
• Rods are marked to designate the approximate overall length of the gage
• Nickel-plated balancing attachment parts for corrosion resistance
• Spring plunger holds the balancing attachment in proper rotational position
• Also functions as a strain gage on engine frames during live operation

What's Included:

• 696Z Crankshaft Distortion Dial/Strain Gage
• 696B Balancing Attachment
• 10 rods with length markings
• 1 extension rod
• Carrying case

Designed in collaboration with Hartford Steam Boiler, the Starrett 696Z is a trusted tool for marine, industrial, and heavy equipment maintenance professionals. EDP No. 52901.