metal ruler 6 inch
Skip itPrices mostly outside the sweet spot ($3.21–$14.99) — this niche doesn't clear our bar today.
Returns
Incredible0.5%return rate — above 5% kills the launch gate
Conversion
Great10.8%search→purchase rate — share of searches ending in a sale
Review moat
Good1,124.55avg incumbent reviews — the moat a new listing must climb
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Brand share
Okay75%top-5 brand share — brands hold most of the demand
Market size
Bad$92K$92K/yr · 104K searches
Avg price
Bad$8.20avg listing price — sweet spot $15–$100
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Growth
Bad-10.3%90-day search growth — must beat 0% to launch
Price range
Bad$3.21–$14.99cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, metal ruler 6 inch is a $92K/yr Amazon United States market (104K searches/yr). The top 5 brands hold 75% of demand. Demand peaks in Jan. Verdict: Skip it — 45/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
metal ruler 6 inch market data
- Units sold / yr
- 10K–13K
- avg 250–500/product
- Revenue / yr
- $82K–$103K
- units × avg price
- Conversion rate
- 10.8%
- Avg BSR
- #97
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 87%
- Out of stock
- 4.1%
- Avg brand age
- 56 months
- Avg seller age
- 183 days
Competition & brand share
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.Brands
16 rising
Sellers
35
Top-5 brand share
75%
Top 20: 100%
Top-5 click share
52%
Top 20: 89%
Open market
19%
- Mr. Pen29%
- PEC Tools22%
- CHAYUFUN9%
- ZTEOFO8%
- Westcott7%
- Zotemo6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -10.3% search growth over the last 90 days.Peak months: Jan · busiest ÷ quietest = 1.5×
Top metal ruler 6 inch search terms
- small metal ruler18K/yr
- 6 inch metal ruler16K/yr
- metal ruler 6 inch12K/yr
- 6 metal ruler9K/yr
- 6 inch ruler metal8K/yr
- 6 ruler metal5K/yr
- metal ruler 6+ inch6K/yr
- steel ruler 6 inch6K/yr
- small metal ruler 6 inch4K/yr
- 6 steel ruler4K/yr
Top metal ruler 6 inch 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
Mr. Pen- Machinist Ruler 3 Pack 6 Inch Stainless Steel Metric & Imperial
Mr. Pen$4.994.6★5,501 rev
PEC Tools 6 x 150mm Machinist Metal Ruler High Carbon Steel English/Metric Markings 1/32 1/64 0.5mm 1mm Suitable for Engineers Between Imperial and Metric Systems Made in USA
PEC Tools$11.494.9★40 rev
Mr. Pen- Machinist Ruler 6 Inch 2 Pack Stainless Steel Imperial
Mr. Pen$5.914.6★5,501 rev
6 Pack Heavy Duty 6 INCH (15 CM) Steel Ruler Set
CHAYUFUN$3.784.6★32 rev
6-Inch Stainless Steel Metal Ruler with Non-Slip Cork Backing - 3 Pack
ZTEOFO$6.014.7★356 rev
Newest
by launch date
Metal Ruler 6 Inch Gold Brass Small Ruler for Journaling Machinist Bookmark Rulers Metric Dual Scale Measurement Tool Drawing Measuring Mini Small Brass Machinist Rulers for Journal Notebooks
Xelsluthe$7.085 rev
6 Pack Heavy Duty 6 INCH (15 CM) Steel Ruler Set
CHAYUFUN$3.7832 rev
6 Inch Machinist Ruler Set - 4 Pack Stainless Steel Precision Double Sided Ruler with 1/64 1/32 1/16 & 1/8 Inch Graduations Etched Markings - for Engineers Woodworking and DIY (4 6 Inch)
ALLWIN$6.0829 rev
PEC Tools 6/150mm Flexible Metal Ruler High-Quality Machinist Ruler Satin Chrome Finish Decimal/Metric Graduation (1/10 1/50 1mm 0.5mm) Suitable for CNC Operators and Engineers Made in USA
PEC Tools$9.8523 rev
6 Inch Metal Ruler Set 7 Pcs Colored Dual Scale Rule with Inches and Centimeters Metric Imperial Measurements Small Straight Ruler for School Home Office Geometry Crafting Use (7 Colors)
FdcZeyxior$7.7117 rev
Trending
90-day click momentum6 Inch Machinist Ruler Set - 4 Pack Stainless Steel Precision Double Sided Ruler with 1/64 1/32 1/16 & 1/8 Inch Graduations Etched Markings - for Engineers Woodworking and DIY (4 6 Inch)
ALLWIN$6.084.9★
Metal Ruler 6 Inch Gold Brass Small Ruler for Journaling Machinist Bookmark Rulers Metric Dual Scale Measurement Tool Drawing Measuring Mini Small Brass Machinist Rulers for Journal Notebooks
Xelsluthe$7.085.0★
PEC Tools 6/150mm Flexible Metal Ruler High-Quality Machinist Ruler Satin Chrome Finish Decimal/Metric Graduation (1/10 1/50 1mm 0.5mm) Suitable for CNC Operators and Engineers Made in USA
PEC Tools$9.854.9★
6 Pack Heavy Duty 6 INCH (15 CM) Steel Ruler Set
CHAYUFUN$3.784.6★
Helonge Metal Ruler Ruler Kit with Three Length 6/8/12 Steel Ruler Set for Art Craft etc
Helonge$6.554.7★
What buyers say about metal ruler 6 inch
What buyers praise and complain about, mined from review topics.What buyers love
“They are absolutely top notch quality at an amazing price”
“Great value”
“easy to read”
“fits your shirt pocket holder nicely”
“These seem well made and accurate”
“As advertised”
“These are very strong and accurate”
“they are durable”
“And it's American made”
“sharp edges and 2 of 4 corners also super sharp”
What buyers complain about
“Poor accuracy, poor quality”
“Small rulers,”
“False advertising - not as described or shown”
“realized the new one is way off”
“It left A LOT of residue”
“compares to a Starrett only a lot cheaper”
“But sharp edges”
“Very disgusted with a product that I have to clean before I can use it”
“Sticker wont come off”
“Hard to explain”
Top return reasons
Common questions
- Is metal ruler 6 inch profitable to sell on Amazon United States?
- The niche generates $92K/yr across 31 tracked products. 4 of 10 products launched in the last 360 days are still selling. 90-day search growth is -10.3%. Flapen's verdict: Skip it (45/100).
- How competitive is the metal ruler 6 inch niche?
- 16 brands and 35 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 75% of demand.
- What do buyers complain about in metal ruler 6 inch?
- Top complaints mined from reviews: Measurement/Reading Accuracy, Size-Overall, Advertised Vs Actual Product. The return rate is 0.5%.
- When does demand for metal ruler 6 inch peak?
- Demand peaks in Jan; the busiest month runs 1.5× the quietest.
- What does it cost to enter the metal ruler 6 inch niche?
- Listings span $3.21–$14.99; the average listing price is $8.20 (sweet spot $15–$100). The average incumbent carries 1,125 reviews — the moat a new listing must climb.