This Magnetic Base is Compatible with Digital Dial Indicator and Metric Dial Indicator,

NOT Suit for Imperial Dial Indicator

Weight: 1201.7g Rally: 176lbs（80kg） Luminous magnet arrow Length: About 35.8cm/14.1 inch Material: Steel Arm Adjustment: 3 joints Arm Dimension: Lower arm  5in（128mm）,Upper arm 4.5in（115mm） Clamping diameter: 3/8 inch（9.52mm）