machinist square
Worth a lookShows low returns (0.9%), but soft demand (-16.0% this quarter) keeps it on the watch list.
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Avg price
Incredible$28.16avg listing price — sweet spot $15–$100
Price range
Great$7.85–$84.83cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good795.16avg incumbent reviews — the moat a new listing must climb
Competition
Good46%top-5 click share — leaders hold, buyers still browse
Brand share
Good69%top-5 brand share — brands hold most of the demand
Conversion
Good4.2%search→purchase rate — share of searches ending in a sale
Market size
Okay$189K$189K/yr · 160K searches
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-16.0%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, machinist square is a $189K/yr Amazon United States market (160K searches/yr). The top 5 brands hold 69% of demand. Demand peaks in Jan–Dec. Verdict: Worth a look — 55/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
machinist square market data
- Units sold / yr
- 6K–8K
- avg 100–250/product
- Revenue / yr
- $169K–$225K
- units × avg price
- Conversion rate
- 4.2%
- Avg BSR
- #163
- Page quality
- 0%
- Prime
- 92%
- Sponsored
- 76%
- Out of stock
- 5.2%
- Avg brand age
- 63 months
- Avg seller age
- 172 days
Competition & brand share
The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.Brands
24 falling
Sellers
79
Top-5 brand share
69%
Top 20: 98%
Top-5 click share
46%
Top 20: 85%
Open market
26%
- Boomgood27%
- PEC Tools15%
- Suwimut11%
- Frienda9%
- Atarvana7%
- Groz5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -16.0% search growth over the last 90 days.Peak months: Jan, Dec · busiest ÷ quietest = 1.7×
Top machinist square search terms
- machinist square122K/yr
- machinist square set8K/yr
- engineer square8K/yr
- machine square6K/yr
- machinists square5K/yr
- engineers square5K/yr
- engineering square3K/yr
- machinist squares3K/yr
Top machinist 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
Suwimut Machinist Square Set 2 3 4 6 Inch Mechanical Engineer Hardened Steel High Precision Squares 90 Degree Wide Base Square Tool L-Type Right Angle Ruler Tool for Woodworking
Suwimut$23.304.5★98 rev
PEC Tools Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 3 x 2-1/2 Inch Suitable for Woodworking and Precision Layout Work
PEC Tools$23.784.7★98 rev
Machinist Square Set 2 3 4 and 6 Squares Machinist Engineer Steel Benchmark Measure Tools High Precision 90 Degree Wide Base Tool L-Type Testing Measuring Tool
Frienda$24.794.4★466 rev
Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 4 x 2.5 Inch
Boomgood$8.874.4★994 rev
Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 5 x 3.2 Inch
Boomgood$10.414.4★994 rev
Newest
by launch date
AKNgoes Precision Woodworking Square Stainless Steel Square with Shoulder Lip Self Standing for Quick Measurement Built in Scribe Notches Framing Tool for Professional Carpentry Use-6 Inch
AKNgoes$38.9277 rev
PEC Tools Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 3 x 2-1/2 Inch Suitable for Woodworking and Precision Layout Work
PEC Tools$23.7898 rev
PEC Tools Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 2 x 1-1/2 Inch Suitable for Woodworking and Precision Layout Work
PEC Tools$21.3998 rev
PEC Tools Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 4 x 3 Inch Suitable for Woodworking and Precision Layout Work
PEC Tools$29.0198 rev
Suwimut Machinist Square Set 2 3 4 6 Inch Mechanical Engineer Hardened Steel High Precision Squares 90 Degree Wide Base Square Tool L-Type Right Angle Ruler Tool for Woodworking
Suwimut$23.3098 rev
Trending
90-day click momentumMachinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 5 x 3.2 Inch
Boomgood$10.414.4★
Taytools 7464237 Machinist Engineer Solid Stainless Steel Square 4 x 3 x .220 Thick DIN 875/0 (Square w/in - 0.0003) Stainless Steel
Taytools$21.864.6★
Suwimut Machinist Square Set 2 3 4 6 Inch Mechanical Engineer Hardened Steel High Precision Squares 90 Degree Wide Base Square Tool L-Type Right Angle Ruler Tool for Woodworking
Suwimut$23.304.5★
PEC Tools Machinist Square Precision Engineer Wide Seat Square 90 Right Angle Ground Hardened Steel Angle Ruler 3 x 2-1/2 Inch Suitable for Woodworking and Precision Layout Work
PEC Tools$23.784.7★
Machinist Square Set 2 3 4 5 Inch Atarvana Mechanical Steel High Precision Squares Harden Carbon Steel 90 Degree Wide Base L-Type Right Angle Ruler Tool for Woodworking
Atarvana$22.634.4★
What buyers say about machinist square
What buyers praise and complain about, mined from review topics.What buyers love
“good quality, more accurate than advertised”
“Great value”
“Excellent tool”
“The various sizes are perfect for any needs”
“It is extremely accurate and spot on”
“The case that these come in is relatively sturdy though it is made of plastic”
“As advertised”
“I am amazed with the excellent design”
“Smooth slide makes adjustments easy”
“Very good quality and material”
What buyers complain about
“At the corners, the 1", 2 and 3 dimensions are dead on”
“Off by 1mm”
“not quite as good as I hoped”
“these have already started to rust”
“These tools may not be of the highest machinist accuracy”
“after only a few uses, it failed and after struggling to see why my boards were out of square, I realized that my square had failed”
“I will consider a less budget friendly option in the future”
“Excess Material removed”
“It's very sharp”
“The photo is upside down”
Top return reasons
Common questions
- Is machinist square profitable to sell on Amazon United States?
- The niche generates $189K/yr across 37 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -16.0%. Flapen's verdict: Worth a look (55/100).
- How competitive is the machinist square niche?
- 24 brands and 79 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 69% of demand.
- What do buyers complain about in machinist square?
- Top complaints mined from reviews: Size-Overall, Measurement/Reading Accuracy, Quality-Overall. The return rate is 0.9%.
- When does demand for machinist square peak?
- Demand peaks in Jan–Dec; the busiest month runs 1.7× the quietest.
- What does it cost to enter the machinist square niche?
- Listings span $7.85–$84.83; the average listing price is $28.16 (sweet spot $15–$100). The average incumbent carries 795 reviews — the moat a new listing must climb.