Metric and imperial leaves live on the same tool, and get mixed up · review
The only set here that prints its contents: BGS lists every metric ISO pitch it carries, from 0.25 to 4.0 mm (0.01 to 0.16 in) and beyond, rather than quoting a range.
What the figures leave us with The one to buy. Same leaves as the rest, and the only listing that tells you exactly what is in the packet.
Four sets, one parts list.
A double thread gauge with 52 leaves for thread pitches, with the metric ISO pitches listed individually: 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.7, 0.75, 0.8, 0.9, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 3.5, 4.0 and beyond.
Everywhere else in this hub the coverage is a range with a lower and an upper bound. That is not the same as a list: a range says nothing about what sits between its ends. On a tool whose entire function is matching a specific pitch, knowing the pitch is present is the only specification that matters.
Metric and imperial leaves on separate pivots cannot be confused by position, which is the failure mode of every single-pivot set. It is a small mechanical decision that removes the tool’s characteristic mistake.
Read on the day this page was built: $33 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 31 August 2026. The live price is at the top of the page.
| Amazon reference | B001ILD66U (identical on 6 markets) |
|---|---|
| EAN | 4026947030692 |
| Leaves | 52 leaves |
| Scale | every metric ISO pitch listed |
| Also stated | trade catalog reference |
Ranges hide gaps. A set stated as covering 0.25 to 6.0 mm (0.01 to 0.24 in) does not necessarily contain every pitch in between, and the one you need is the one you find out about at the bench. BGS prints the list.
Two pivots in one body, so the metric leaves and the imperial leaves are physically separated. It removes the single most common error in using these tools — reading across from one system to the other.
For the printed list and the separated pivots, yes. On the leaves themselves there is nothing to choose between them.
8.5/ 10
The one to buy. Same leaves as the rest, and the only listing that tells you exactly what is in the packet.
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom, United States. Listed is not the same as in stock — availability changes daily.
Details checked on August 31, 2026.
Anyone who wants to know a specific pitch is in the set before buying it.
Specifications: the manufacturer sheet for measuring instruments and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
52 leaves · metric and imperial · 60° to international standards
A 52-leaf stainless set stating that its metric leaves follow the internationally recognized 60° angle, with clearly visible markings on each leaf.
Best for: The same job as every other 52-leaf set — pick on price and on which one is in stock.
52 leaves · metric 0.25–6.0 mm (0.01 to 0.24 in) 60° · imperial 4G–62G 55° · radius gauge included
A 52-leaf stainless set that also includes a radius gauge, and the only set in this hub sold across five European markets.
Best for: Anyone who wants the thread gauge available across Europe rather than on one market.
52 leaves · 24 metric 0.25–6.0 mm (0.01 to 0.24 in) · 28 imperial 4G–62G · stainless
A 52-leaf stainless set covering 24 metric pitches from 0.25 to 6.0 mm (0.01 to 0.24 in) at 60° and 28 imperial pitches from 4G to 62G at 55°, folding into a pocket-sized body.
Best for: A first thread gauge, where the job is identifying a bolt rather than certifying it.
