






📐 Elevate your precision game — because flat is the new flawless!
The POWERTEC 24 Inch Machinist Aluminum Straight Edge is a precision-engineered tool with a 0.001'' tolerance, dual-sided metric and imperial scales, and a durable anodized aluminum body. Designed for professionals demanding exact flatness verification and alignment in automotive, woodworking, and machine maintenance tasks, it combines ergonomic design with long-lasting performance and easy storage.














| ASIN | B07NBQ5HSQ |
| Best Sellers Rank | #224,093 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #397 in Construction Rulers |
| Brand | POWERTEC |
| Brand Name | POWERTEC |
| Color | 24" |
| Customer Reviews | 4.6 out of 5 stars 608 Reviews |
| Global Trade Identification Number | 00843441102984 |
| Graduation Range | 24 Inches |
| Included Components | Aluminum Straight Edge Ruler |
| Item Dimensions L x W | 24"L x 2.25"W |
| Item Type Name | 71227 Anodized Aluminum Straight Edge Ruler |
| Item Weight | 1.5 Pounds |
| Manufacturer | POWERTEC |
| Material | Aluminum |
| Material Type | Aluminum |
| Model | 71227 |
| Part Number | 71227 |
| Product Dimensions | 24"L x 2.25"W |
| Style | Striaght Edge |
| Style Name | Striaght Edge |
| UPC | 084344110298 843441102984 |
| Unit Count | 1.0 Count |
E**S
Well made and accurate.
Work great for setting up differentials and measuring pinion depth, very well made.
C**N
Well made straight edge
It is a stout straight edge. It is flat, straight and has a bit of weight.
U**L
Good tool
A great value! Mixed my cylinder head and got exactly the numbers they got at the machine shop
K**K
Lightweight but sturdy.. good value
Lightweight but sturdy, ridged aluminum construction. Works well for checking turners of surfaces like engine blocks and head decks.
A**T
Pretty good for the price!
Pretty straight at a good price; note that the surface edge is flat but there seems a little bend. Handle carefully as it is not the harder material (steel) typical measuring instruments.
T**K
Fit my needs, worked well
I needed this to check a set of SBC heads and the block decks before installing new head gaskets. Very nice. I used a high powered LED flashlight to look for gaps between the straight edge on the head surface since my finest gauge would not fit between the two surfaces…no gaps found! My only other comment would be on the flat edge; it’s slightly rounded on the outside edges and just a bit narrow (which has pros and cons), not a reason to deduct a star.
C**N
Nice quality, but the item was received damaged so it had to be returned.
The item looked good, seems like it will do the job, but it was sent to me damaged. The package was sealed when I received it, and the package was in good shape- so I am guessing the damage occurred at the factory prior to it being boxed up. There was a large scratch on the straight edge portion that would have made the straight edge good for crafts and overall fairly accurate, but not a precise instrument capable of measuring 0.001 variations. I bought this to determine if a cylinder head needed to be resurfaced or not, but it couldn't do the job due to the damage. I am giving a 5 for the quality of the item and thinking that the item I received was just a damaged item that made it through quality control.
B**A
Works perfectly.
I was rebuilding the head on a theta 2 engine and due to it being a theta 2 engine, I didnt want to spend the money to send it out for machining. I used this level and it said the head was completely flat. Put the engine back together and 5,000 miles later it still holds coolant. I wish it had came with a cheap plastic case, but either way it was true.
J**E
Bien
Muy práctico, es una regla resistente
Z**L
Perfect for testing engines
Bought this to test cylinder head straightness, ships quick and it's well built. Only gave it 4 stars cuz I wish the edges were sharper, so I can confirm if I'm sitting the ruler straight on the head and not tilting it sideways.
A**C
Straight
Seems straight enough
M**T
Mint tool
Flat as fudge, nice and sturdy and really well made
S**N
Good quality
Worked perfectly for measuring block/cylinder head flatness.
Trustpilot
2 weeks ago
3 weeks ago