---
title: "Scale Ruler — £111K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/stationery-office-supplies/scale-ruler"
last_updated: "2026-07-31T11:41:31.073Z"
locale: en
meta:
description: "Niche score 43/100 · £111K/yr market · 82K searches/yr · £7.01 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · £111K/yr market · 82K searches/yr · £7.01 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Scale Ruler — £111K/yr Amazon UK Niche (2026) - Flapen"
---
# **scale ruler**
**Skip it**
Prices mostly outside the sweet spot ($3.16–$11.82) — this niche doesn't clear our bar today.
Market size 27Growth 12Conversion 100Competition 25Returns 98Price range 0Avg price 19Brand share 42Review moat 68Quality gap 50
**Conversion**
**Incredible****19.3%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.4%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****777.73**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****80%**
top-5 brand share — brands hold most of the demand
**Market size**
**Okay****£111K**
£111K/yr · 82K searches
**Competition**
**Bad****70%**
top-5 click share — a locked-up shelf
**Avg price**
**Bad****£7.01**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-25.9%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****£3.16–£11.82**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, scale ruler is a £111K/yr Amazon United Kingdom market (82K searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 43/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **scale ruler market data**
- **Units sold / yr**
- **15K–20K**
- avg 750–1,000/product
- **Revenue / yr**
- **£105K–£140K**
- units × avg price
- **Conversion rate**
- **19.3%**
- **Avg BSR**
- **#54**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **67%**
- **Out of stock**
- **2.3%**
- **Avg brand age**
- **45 months**
- **Avg seller age**
- **180 days**
## **Competition & brand share**
The top 5 products capture 70% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **▼falling
**Sellers**
**20**
**Top-5 brand share**
**80%**
Top 20: 100%
**Top-5 click share**
**70%**
Top 20: 100%
**Open market**
**15%**
- Cyleibe21% - Aruicheng19% - Stylo18% - Rena Chris15% - Helix8% - Rulex6% - Open — no brand owns it (5 brands, 15%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -25.9% search growth over the last 90 days.
3K2KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/uk/stationery-office-supplies/scale-ruler/trend)
## **Top scale ruler search terms**
- **scale ruler**58K/yr-26.3%17.4% conv. - **scale rule**10K/yr-29.5%14.8% conv. - **scale ruler architect**7K/yr-19.8%16.1% conv. - **scale ruler 1 20 1 50 1 100**3K/yr-28.4%25.3% conv. - **architect ruler**3K/yr-16.4%9.1% conv. [**All search terms **](https://flapen.com/research/uk/stationery-office-supplies/scale-ruler/search-terms)
## **Top scale ruler 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.
0%10%£11K20%£22K30%£33K40%£44K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Architectural Scale Ruler Aluminum Triangular Scale Ruler Metric 1:20 1:25 1:50 1:75 1:100 1:125 Standard 12 Inch for Architects Students Draftsman and Engineers-Black**Cyleibe**£8.25**4.7★1,912 rev](https://www.amazon.co.uk/dp/B07WWTDCHQ) [2**Aruicheng Architectural Triangular Scale - 30cm Metric 1:20 1:25 1:50 1:75 1:100 1:125 for Architects & Engineers**Aruicheng**£3.94**4.2★105 rev](https://www.amazon.co.uk/dp/B0DGT4LXRT) [3**Rena Chris Architectural Metric Scale Ruler: 30cm Ruler Aluminum Architect Scale Laser Etched Triangle Scale Ruler Scale Ruler for Blueprint Drafting Ruler Metal Scale Ruler Architecture Ruler**Rena Chris**£5.77**4.7★3,613 rev](https://www.amazon.co.uk/dp/B0DMVP7T69) [4**Stylo Aluminum Architect Scale Ruler - 30cm Triangle Drafting With Color Coded Grooves for Blueprint - Metric Architectural Scale (Metric Units)**Stylo**£11.79**4.7★1,267 rev](https://www.amazon.co.uk/dp/B0CC6Z9RK4) [5**Aluminum Architect Scale - 30cm Laser Etched Triangle Drafting Ruler with Colour Coded Grooves for Blueprint Drafting - Architectural Scale (Black Metric Units)**Stylo**£11.82**4.7★1,267 rev](https://www.amazon.co.uk/dp/B0D4H1HJSX)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Architectural Triangular Scale Ruler - 30cm Metric Scale 1:20 1:25 1:50 1:75 1:100 1:125 for Architects Draftsman Engineers**Nolvireth**£6.39**0 rev4mo ago](https://www.amazon.co.uk/dp/B0GTVCBMHV) [**Architectural Scale Ruler 30cm Aluminum Triangular Scale Rule Architect 12 Inch Metal Triangle Ruler Metric 1:20 1:25 1:50 1:75 1:100 1:125 for Architects Draftsman Engineers**Aruicheng**£4.42**9 rev8mo ago](https://www.amazon.co.uk/dp/B0G19S564M) [**Architectural Triangular Scale Ruler - 30cm Metric Scale 1:20 1:25 1:50 1:75 1:100 1:125 for Professional Use**Ulmervion**£6.21**5 rev9mo ago](https://www.amazon.co.uk/dp/B0FX9D7ZX3) [**Scale Ruler Scale Rule Scale Ruler Architect For Architectural Blueprint Drafting Architects Draftsman And Engineers**strrng**£3.16**9 rev1y ago](https://www.amazon.co.uk/dp/B0DYNMKKML) [**Rena Chris Architectural Metric Scale Ruler: 30cm Ruler Aluminum Architect Scale Laser Etched Triangle Scale Ruler Scale Ruler for Blueprint Drafting Ruler Metal Scale Ruler Architecture Ruler**Rena Chris**£5.77**3,613 rev1y ago](https://www.amazon.co.uk/dp/B0DMVP7T69)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Architectural Triangular Scale Ruler - 30cm Metric Scale 1:20 1:25 1:50 1:75 1:100 1:125 for Architects Draftsman Engineers**Nolvireth**£6.39**0.0★**▲ 419%**](https://www.amazon.co.uk/dp/B0GTVCBMHV) [**Architectural Scale Ruler 30cm Aluminum Triangular Scale Rule Architect 12 Inch Metal Triangle Ruler Metric 1:20 1:25 1:50 1:75 1:100 1:125 for Architects Draftsman Engineers**Aruicheng**£4.42**5.0★**▲ 225%**](https://www.amazon.co.uk/dp/B0G19S564M) [**Aluminum Architect Scale - 30cm Laser Etched Triangle Drafting Ruler with Colour Coded Grooves for Blueprint Drafting - Architectural Scale (Black Metric Units)**Stylo**£11.82**4.7★**▲ 99%**](https://www.amazon.co.uk/dp/B0D4H1HJSX) [**Architectural Triangular Scale Ruler - 30cm Metric Scale 1:20 1:25 1:50 1:75 1:100 1:125 for Professional Use**Ulmervion**£6.21**3.6★**▲ 97%**](https://www.amazon.co.uk/dp/B0FX9D7ZX3) [**Rulex 30cm 12 inch Flat Oval Metric Scale Ruler 1:1 1:100 1:5 1:50/1:20 1:200 1:1250 1:2500 - UK manufactured**Rulex**£7.88**4.4★**▲ 97%**](https://www.amazon.co.uk/dp/B01BNON2VA)
**~~View all trending →~~**
## **What buyers say about scale ruler**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**31%
*“Excellent product for the job”*
**Advertised Vs Actual Product**21%
*“Does the job”*
**Ease Of Use**15%
*“Easy to use”*
**Durability**10%
*“Strong and well made and appears very durable for the cost”*
**Value For Money**4%
*“OK, it wasn't expensive”*
**Material Quality**4%
*“Better than the conventional plastic versions available”*
**Measurement/Reading Accuracy**3%
*“ideal for checking dimensions on plans”*
**Design-Overall**2%
*“Nice, high contrast design with clear markings”*
**Color**2%
*“the laser-etched markings are white”*
**Strength**1%
*“Strong and well made and appears very durable for the cost”*
### **What buyers complain about **
**Quality-Overall**58%
*“Garbage”*
**Value For Money**17%
*“Haul garbage 🗑️ at full price”*
**Smell**8%
*“Smells of cheap chemicals”*
### **Top return reasons **
**Quality-Overall**29%
**Measurement/Reading Accuracy**19%
**Material Quality**10%
**Defective Material/Parts**10%
**Ease Of Use**7%
**Strength**7%
**Functionality-Overall**5%
**Advertised Vs Actual Product**5%
**Compatibility-Overall**5%
**Color**5%
## **Common questions**
- **Is scale ruler profitable to sell on Amazon United Kingdom?**
- The niche generates £111K/yr across 15 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -25.9%. Flapen's verdict: Skip it (43/100).
- **How competitive is the scale ruler niche?**
- 11 brands and 20 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 80% of demand.
- **What do buyers complain about in scale ruler?**
- Top complaints mined from reviews: Quality-Overall, Value For Money, Smell. The return rate is 0.4%.
- **When does demand for scale ruler peak?**
- Demand peaks in Sep–Oct; the busiest month runs 2.4× the quietest.
- **What does it cost to enter the scale ruler niche?**
- Listings span £3.16–£11.82; the average listing price is £7.01 (sweet spot $15–$100). The average incumbent carries 778 reviews — the moat a new listing must climb.
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