set square
Worth a lookShows low returns (0.9%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Brand share
Great50%top-5 brand share — no brand owns this niche
Price range
Great£3.92–£101.02cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great7.4%search→purchase rate — share of searches ending in a sale
Competition
Great38%top-5 click share — an open shelf
Review moat
Good919.39avg incumbent reviews — the moat a new listing must climb
Market size
Good£476K£476K/yr · 538K searches
Avg price
Okay£11.88avg listing price — sweet spot $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-9.6%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, set square is a £476K/yr Amazon United Kingdom market (538K searches/yr). The top 5 brands hold 50% of demand. Demand peaks in Apr. Verdict: Worth a look — 63/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
set square market data
- Units sold / yr
- 30K–40K
- avg 500–750/product
- Revenue / yr
- £356K–£475K
- units × avg price
- Conversion rate
- 7.4%
- Avg BSR
- #157
- Page quality
- 0%
- Prime
- 97%
- Sponsored
- 80%
- Out of stock
- 2.5%
- Avg brand age
- 42 months
- Avg seller age
- 173 days
Competition & brand share
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.Brands
37 falling
Sellers
112
Top-5 brand share
50%
Top 20: 87%
Top-5 click share
38%
Top 20: 69%
Open market
42%
- Preciva12%
- WORKPRO11%
- OX Tools11%
- Auyuiiy8%
- flintronic8%
- mwellewm8%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -9.6% search growth over the last 90 days.Peak months: Apr · busiest ÷ quietest = 1.8×
Top set square search terms
- set square147K/yr
- square83K/yr
- combination square85K/yr
- carpenters square59K/yr
- set square carpentry27K/yr
- builders square13K/yr
- try square12K/yr
- carpenter square12K/yr
- adjustable square10K/yr
- square tool12K/yr
Top set square products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Speed Square with 14 Types of Drill Holes 7inch Metric Triangle Ruler Aluminum Alloy Carpenters Tools
Preciva£7.634.7★1,159 rev
Combination Square Set Square Engineers Square 12Inch/300mm Stainless Steel Ruler Adjustable Carpentry Square 45/90 Degree with Bubble Level Measuring Tool for Carpenter/Engineer/Woodworking
Auyuiiy£6.024.4★1,421 rev
Square Ruler Tool Set Combination Square Carpentry Tools with 12Inches/300mm Scale 45/90 Degree Ruler with Bubble Level Measuring Tool for Woodworking Engineer Carpenter
mwellewm£7.063.9★89 rev
OX Tools Pro Aluminium Rafters Square Metric - 180mm Blue
OX Tools£8.494.8★693 rev
Flintronic 2 Pcs Speed Square Set 18+30cm/ 7+12inch Aluminum Alloy Triangle Ruler Metric Woodwork Squares with Carpenter Pencil* 2 Carpenters Square for Angle Measuring Marking Drilled Hole Black
flintronic£13.734.6★252 rev
Newest
by launch dateFlintronic 2 Pcs Speed Square Set 18+30cm/ 7+12inch Aluminum Alloy Triangle Ruler Metric Woodwork Squares with Carpenter Pencil* 2 Carpenters Square for Angle Measuring Marking Drilled Hole Black
flintronic£13.73252 rev
Flintronic 2 Pcs Speed Square Set 18+30cm/ 7+12inch Aluminum Alloy Triangle Ruler Metric Woodwork Square with Carpenter Pencil* 2 Carpenters Squares for Angle Measuring Marking Drilled Hole Red
flintronic£13.89252 rev
Carpenters Speed S-quare 7 inch Metric Triangle Ruler Carpenters Square with 14 Types of Drill Holes Aluminum Alloy Carpenters Tools Triangle Ruler Protractor for Angle Measuring Marking
Munsesi£6.0916 rev
2 Pcs Combination Triangle Rule 12 Inch Combination Square with Spirit Level and 45-90 Degree Marking Speed Squares 7 inch with Marking Pen for Accurate Measurement
FcaecY£7.4990 rev
6 Inch 150mm Metric & Imperial Resettable Carpenters Carpenter Carpentry Try Square Aluminium Horizontal Spirit Level Set Measuring Ruler
S & S PRODUCTS£3.92180 rev
Trending
90-day click momentumCarpenters Speed S-quare 7 inch Metric Triangle Ruler Carpenters Square with 14 Types of Drill Holes Aluminum Alloy Carpenters Tools Triangle Ruler Protractor for Angle Measuring Marking
Munsesi£6.094.8★
Speed Square 7inch Metric Triangle Ruler Triangle Ruler with 14 Types of Drill Holes Aluminum Alloy Carpenters Tools for Angle Measuring Marking (Red)
--£6.254.6★
Flintronic 2 Pcs Speed Square Set 18+30cm/ 7+12inch Aluminum Alloy Triangle Ruler Metric Woodwork Square with Carpenter Pencil* 2 Carpenters Squares for Angle Measuring Marking Drilled Hole Red
flintronic£13.894.6★
Flintronic 2 Pcs Speed Square Set 18+30cm/ 7+12inch Aluminum Alloy Triangle Ruler Metric Woodwork Squares with Carpenter Pencil* 2 Carpenters Square for Angle Measuring Marking Drilled Hole Black
flintronic£13.734.6★
OX Tools Pro Aluminium Rafters Square Metric - 180mm Blue
OX Tools£8.494.8★
What buyers say about set square
What buyers praise and complain about, mined from review topics.What buyers love
“have a few of their tools all good quality”
“Great savings”
“Sturdy well made”
“Easy to use”
“As described”
“Convenient size”
“Solid construction”
“Accurate and well made”
“very durable”
“Excellent weighty square”
What buyers complain about
“awful build quality not smooth at all”
“Slightly flimsy”
“The locking system is so slack its shocking”
“Combination Sq fell apart after 1 use”
“cost a lot more”
“Also proved my trusty old trraditional squares were no longer accurate”
“Rubbish - get the blue Workpro one instead”
“wish i had bought a bigger one”
“a burring that was uncomfortable to hold”
“Not what was expected”
Top return reasons
Common questions
- Is set square profitable to sell on Amazon United Kingdom?
- The niche generates £476K/yr across 61 tracked products. 1 of 9 products launched in the last 360 days are still selling. 90-day search growth is -9.6%. Flapen's verdict: Worth a look (63/100).
- How competitive is the set square niche?
- 37 brands and 112 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 50% of demand.
- What do buyers complain about in set square?
- Top complaints mined from reviews: Quality-Overall, Strength, Locking Mechanism. The return rate is 0.9%.
- When does demand for set square peak?
- Demand peaks in Apr; the busiest month runs 1.8× the quietest.
- What does it cost to enter the set square niche?
- Listings span £3.92–£101.02; the average listing price is £11.88 (sweet spot $15–$100). The average incumbent carries 919 reviews — the moat a new listing must climb.