135 to 155mm Internal Dial Bore Calipers

• Internal dial bore calipers with a 135mm to 155mm measuring range
• The calipers offer internal measurement of bores with a reach of 100mm
• The legs have raised contact points allowing grooves, seals or circlip depths etc to be measured
• The legs of the internal calipers are sprung open and operated by the lever under the handle
• Please note before using the calipers they need to be calibrated using either a setting ring, slip gauges or external micrometers
• With the legs set between the known size turn the outside ring on the dial to match the size. The calipers are now calibrated to measure any size within its range
• To measure the bore - pull the lever towards the handle and insert into the bore. Slowly release the lever and the bore measurement will be shown
• High Quality Caliper - Constructed of hardened stainless steel, moulded handle and 55mm diameter dial indicator
• Included with the calipers - Storage case and Instructions
• Leg Reach - 100mm

Machine-DRO History - A division of The Allendale Group, a family run British company founded in 2003. Our roots are firmly based in the UK, with a head office, engineering and inspection department at our works in Hoddesdon, Hertfordshire. We pride ourselves on being a measuring tool specialists offering tools, services, advice and expertise to our end customers and international distributor network.

Key Specifications

Contact Point Length - 8 mm

Resolution - 0.01mm

We are committed to providing reliable, flexible delivery options to suit your needs. Below is everything you need to know about our shipping and delivery process.

Our Couriers

We’ve partnered with trusted couriers, including:

• Royal Mail
• DPD
• DHL
• Palletways (for heavier items)

This variety ensures we can offer the best delivery options, tailored to your order size and location.

Same Day Dispatch

For orders placed before 2:30 PM GMT/UTC on a working day, we aim to dispatch all in-stock items the same day. Orders placed after this time will be processed on the next working day.

Delivery Times

• UK Orders: 1–5 working days*
• European Orders: 3–10 working days*
• Rest of the World: 4–15 working days*

*Delivery times are estimates and may vary based on your location and courier performance.

Shipping Costs

Shipping rates are calculated based on the total weight of your order. Each product has a set net weight, with a small additional charge (around 10%) for packaging and handling. Our system will automatically select the most suitable delivery option at checkout. If no option is shown, please contact us for assistance.

Special Delivery Options

We offer time-specific and Saturday delivery options for added convenience. These can be selected during checkout, where available.

International Shipping

We ship to most countries worldwide. Simply select your destination at checkout to view available options. Please note that import taxes and customs duties are not included in our shipping fees. These charges will need to be paid when your goods arrive at customs. For more information, you can refer to DHL.com or your local postal service.

Order Collection

Prefer to collect your order? Choose Collection as your delivery option at checkout, and we’ll have it ready for pickup.

Additional Information

• All delivery times are estimates and subject to factors outside of our control, such as customs delays or courier issues.

Warranty Coverage

Standard Warranty: All products are guaranteed for one year from the date of purchase (unless otherwise specified).

During the warranty period, we will repair or replace any defective products at no charge (return-to-base warranty), excluding normal wear and tear.

Eligibility

To benefit from our warranty, please ensure that:

• The product has been installed and used according to the instructions or user manual provided.
• The product is used for its intended purpose as described in the manual.

Please note: Accidental damage, consequential losses, and misuse are not covered by this warranty.

Exclusions

The following consumable items are not covered:

• Batteries
• Solder tips
• Heating elements