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BEBANG JN-1 Dial Bore Gauge Set, 1.97–6.23 in
BEBANG JN-1 is a dial bore gauge set listed for measuring inside diameters from 1.97 to 6.23 inches, with a stated measurement accuracy of 0.0003 in. Its 12 interchangeable extensions and claimed measuring depth of 5.9 inches suit bore inspection across a range of sizes, provided you zero the indicator before use.
At a glance
- The stated diameter range spans 50 mm to 160 mm, and the listing claims measurement into bores up to 150 mm deep.
- A self-centering measuring extension is listed, alongside a chrome-plated handle.
- The manufacturer says to set the dial pointer to zero and choose the appropriate measuring head before taking a measurement.
Price
$50.39Save 20%
Reference price: $62.99
Price checked: Nov 13, 2026
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Pros and cons
Pros
- The 12 interchangeable extensions provide options for different bore sizes within the stated range.
- A claimed 150 mm measuring depth supports inspection of deeper bores.
Technical specifications
7 specifications| Brand | BEBANG |
|---|---|
| Model | JN-1 |
| Diameter measurement range | 50MM(1.97") to 160MM(6.23") |
|---|---|
| Measuring depth | Measures bore to 150mm (5.9") deep |
| Measurement accuracy | 0.0003in |
| Dimensions listed | 35.81 x 13.97 x 5.84 cm; 1.21 kg |
|---|---|
| Weight listed | 1.21 kg |
What to know before buying
- The listing gives metric and inch equivalents for range, depth and accuracy. These are manufacturer claims, not independently verified measurements. Zero the indicator and select the appropriate measuring head before use.
What’s in the box
Included- Dial bore gauge
- Interchangeable extensions, 12
- Manual
Who is it for?
A good fit for
- Machinists or automotive hobbyists measuring internal diameters within the stated 50–160 mm range.
- Buyers who want a dial bore gauge kit with multiple interchangeable extensions.
Less suited to
- Anyone who needs to measure bores outside the listed 50–160 mm range or deeper than the stated 150 mm.
Customer reviews on Amazon
- 5 stars
49% 49% - 4 stars
25% 25% - 3 stars
13% 13% - 2 stars
6% 6% - 1 star
7% 7%
The aggregate ratings are mixed rather than uniformly positive, with five- and four-star ratings alongside three-, two- and one-star ratings. Without review comments, the ratings do not identify specific strengths or problems. Buyers should assess the stated range, depth and accuracy against their measurement needs, and treat those specifications as listing claims.
Frequently asked questions
What bore diameters does the BEBANG JN-1 cover?
The listing states a range of 50 mm (1.97 inches) to 160 mm (6.23 inches).
How deep can this gauge measure?
The listing claims it measures bores to 150 mm (5.9 inches) deep.
What should I do before measuring?
The listing instructs users to set the dial indicator pointer to zero and select the appropriate measuring head.
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