- Excellent Resolution: Displays measurements with a resolution of 0.00005″ (0.001 mm), enabling very fine internal dimension readings.
- Wide Measurement Range: Covers a broad range from 6″ to 60″, making it versatile for very large internal bores.
- High Accuracy Design: Accuracy is specified as [0.00005 × (3 + n + L/2)]″, where n = number of extension rods and L = maximum measuring length in inches.
INSIZE 3521-60 Digital Tubular Inside Micrometer, 6-60"
INSIZE 3521-60 Digital Tubular Inside Micrometer
Are you looking for a precision instrument designed for measuring large internal diameters ranging from 6″ to 60″ (approximately 150 mm to 1,500 mm)? The INSIZE 3521-60 Digital Tubular Inside Micrometer is built for industrial and metrology environments, this micrometer combines rugged construction, fine resolution, and a durable design to deliver highly accurate internal bore measurements. It’s ideal for gauging large pipes, cylinders, or bores where standard inside micrometers may not reach.
Key Features
- Excellent Resolution: Displays measurements with a resolution of 0.00005″ (0.001 mm), enabling very fine internal dimension readings.
- Wide Measurement Range: Covers a broad range from 6″ to 60″, making it versatile for very large internal bores.
-
High Accuracy Design: Accuracy is specified as
[0.00005 × (3 + n + L/2)]″, wheren= number of extension rods andL= maximum measuring length in inches. - Carbide Measuring Faces: The contact surfaces are made of carbide, improving durability and wear resistance for consistent, long-term measurement.
- Rugged Extension Rods: Comes with extension rods whose diameter is 0.866″, allowing flexibility to adapt to different measurement lengths.
- Water- & Dust-Resistant (IP65): The micrometer is rated IP65, protecting it from dust ingress and water spray, making it reliable in harsher shop-floor environments.
- Setting Standards Included: Supplied with certified setting standards so you can calibrate the micrometer before use.
- Optional Data Output: There is an optional data output cable for SPC/data-logging applications (not always included).
- Automatic Power-Off: Helps conserve battery life by powering down the unit when not in use (per catalog behavior).
Specifications
| Measuring Range | 6″ – 60″ (approx. 150 mm – 1,500 mm) |
| Resolution | 0.00005″ / 0.001 mm |
| Accuracy | ±[0.00005 × (3 + n + L/2)]″ (n = number of rods, L = max measuring length in inches) |
| Measuring Faces | Carbide |
| Extension Rod Diameter | 0.866″ |
| Protection Rating | IP65 (dust/water resistance) |
| Data Output | SPC (when data cable accessory is used) |
| Power | Digital electronics, battery-powered (with automatic power-off) |
| Weight | Approx. 10 lb |
Items Included
- Main tubular micrometer head (6–7″)
- Extension rods (enough to span up to 60″ range)
- Setting standards (gauge ring or reference) for calibration
- Carrying / storage case
- Instruction manual / user guide (for operation, zeroing, rod handling)
Insize 3521-60 Digital Tubular Inside Micrometer Manual