


📐 Cut like a pro, every time—because precision is your power move.
The Johnson Level & Tool J4900 Aluminum Cutting Guide is a 98-inch heavy-duty cutting accessory featuring two 49-inch extruded aluminum rails. Designed for precision and durability, it includes a patented quick-assemble connector, joiner plate, and two C clamps for easy setup. Compatible with circular saws, routers, and more, it delivers consistent straight cuts for carpentry, plumbing, and woodworking projects. Backed by a 1-year limited warranty, this tool is a reliable choice for professionals seeking accuracy and longevity.

















| ASIN | B00002N5OF |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #214,962 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #399 in Levels |
| Brand | Johnson |
| Color | Silver |
| Customer Reviews | 4.1 4.1 out of 5 stars (234) |
| Date First Available | June 8, 2005 |
| Global Trade Identification Number | 00049448490004 |
| Included Components | 98-Inch Aluminum Cutting Guide |
| Is Discontinued By Manufacturer | Yes |
| Item Package Quantity | 1 |
| Item Weight | 2.2 pounds |
| Item model number | J4900 |
| Manufacturer | Johnson Level & Tool |
| Material | Aluminum |
| Measurement System | Inch |
| Operation Mode | Manual |
| Part Number | J4900 |
| Power Source | hand_powered |
| Product Dimensions | 98"L x 2.63"W |
| Size | Pack of 1 |
| Style | Circular |
| UPC | 049448490004 |
| Warranty Description | 1 Year Warranty: Johnson Level warrants this product against defects in material and workmanship for one year after the confirmed purchase date. At its option, the company will replace or repair the product if it fails under normal use. |
N**Y
Great Solution
This has really helped me to cut large pieces of fabric.
R**O
Perfectly straight + great customer service.
I just received this a few days ago. Right out of the package it was perfectly straight. But, it was missing two of the four connecting screws. Not a big deal, these things happen. As long as the company rectifies it in a timely fashion, no harm - no foul. Johnson Level + Tool did just that. I emailed the company the evening that I received the straight edge, and they responded the next day. Here it is a couple days later, and the screws arrived. There is a small amount of deflection near the center when assembled and using the whole straight edge. Not really a problem when you are aware of it and clamp appropriately to account for it. I gave it five stars because at this price point, I would expect a lot more and it is a quality product.
K**R
Doesn’t stay true
Good item, but doesn’t stay straight.
H**N
Missing
Arrived missing screws to assemble it and missing two c-clamps. I went to hd and got screws. The tool itself is great.
A**S
Great product
Well made and work great
R**O
Excelente producto y presión
A**R
Missing Parts
Item was missing parts upon arrival.. it didn’t arrive with clamps or the screws that were needed. I had to return.
V**.
Perfect
Very useful making a straight line on the length of plywood and also a great guide for my skill saw when cutting larger sheets of wood
C**N
Parfait pour les coupes que j'avais à faire
D**N
Use one for 48" or less - put the 2 together for up to 96" very stable
D**S
needs support in center.end clamp hold good,but middle moves easy giving very crooked cut
W**K
A cutting guide must be straight but the one I received was not and looked like a return to me. I have 2 48" levels that I saw no light when I put one over the other, looking at a light source. One of the cutting guides was letting in plenty of light when paired with my level.
M**N
it did the job, but missing 2 screws.
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