Last updated at 09/06/2026 05:25:21
STANLEY 2-46-143 Contractor Grade Combination Square, 300 mm
Free delivery
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STANLEY 300mm Contractor Grade Combination Square 2-46-143
Delivery between 15–18 June $9.70
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Stanley 12” 300mm Professional Combination Square
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Stanley 46-143 300mm Measuring Combination Square Angle Ruler
Free delivery
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Stanley 46-143 300mm Measuring Combination Square Angle Ruler
Delivery $45.29
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originally posted on mitre10.co.nz
As a novice doing DIY this combination square helped make my project be a lot more accurate. There are so many functions which I picked up from YouTube using this tool.
originally posted on mitre10.co.nz
I've been using this square for my woodwork projects and I'm definitely happy with it - Easily adjustable, a decent weight, and the level is handy too.
originally posted on mitre10.co.nz
This is a good quality item, nice clean cut edges and easy to read numbers. It's been a good replacement thus far.
| Product dimensions | 30 x 14 x 2.01 cm; 290.3 Grams |
| Style | Durable, durable |
| Power Source | hand_powered |
| Included Components | 1 x Stanley Combination Square, 300 mm Size |
| Country of origin | USA |
STANLEY 2-46-143 Contractor Grade Combination Square, 300 mm
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Stanley Die Cast Combination Square 300mm
Delivery $10
Stanley Die Cast Combination Square 300mm
Delivery $15
STANLEY 300mm Contractor Grade Combination Square 2-46-143
Delivery between 15–18 June $9.70
Stanley 2-46-143 300mm Die Cast Combination Square
Delivery between Thu – Mon $60.55
As a novice doing DIY this combination square helped make my project be a lot more accurate. There are so many functions which I picked up from YouTube using this tool.
I've been using this square for my woodwork projects and I'm definitely happy with it - Easily adjustable, a decent weight, and the level is handy too.
This is a good quality item, nice clean cut edges and easy to read numbers. It's been a good replacement thus far.
Yeah mine was inaccurate too, and I did something about it.The design of this square is great. The slide has a bump on each side of the bolt, inside where the ruler is inserted, along where the ruler edge butts up against the slide.Take a small, flat file and file down whichever bump that is higher than the other. Yes it will take some time - filing, checking, filing, checking.. but you will then have a "perfectly" true square. How true you want it, and how competent you are at assessing it, is up to you.Some may think "I shouldn't have to fix a square". Well take it from me, not many squares are "square", be they combination, tee or try squares.I've had this one for over seven years and have used it on countless jobs. I love my stanley square.
less than 90 degreesDraw a line like an L shape, and then turn it over and draw a line like a J shape. You will know if the two lines are parallel.
I bought one of these a few years ago and luckily have only used it a couple of times. Today I was marking some wood for cutting and the 90 degree angle had to be spot on. When I was double-checking the top and base with a steel ruler one side kept ending up a mm or so different. I kept re-marking the wood and each time it was out. Finally I checked my Stanley Combination Square against a few set squares and, sure enough, it's out by approx 1mm over the 300mm length of the ruler. Should've paid more and got something that wasn't junk.
I found this square isn't exactly true, no amount of tightning the slide lock will help either.If you're working over a short distance you can get away with the degree of error but if you're marking anything more than 150mm you'll be out by an annoying amount every time
Very good quality, used for multiple jobs around the house
The level in this square is not leveled. ... Not very useful is it?
I bought this when my fuller square broke. It is kind of the same design but does feel more robust. Every time I use it, it brings me great joy. The only down side is the sticker on it has left a greasy mark at one end of the ruler that doesn't want to come off - however the other end is fine. Gotta run - off to measure some things!!
| Product dimensions | 30 x 14 x 2.01 cm; 290.3 Grams |
| Style | Durable, durable |
| Power Source | hand_powered |
| Included Components | 1 x Stanley Combination Square, 300 mm Size |
| Country of origin | USA |
Stanley 300mm Combination Square - 2-46-143
Steel combination square used for precise measurements, marking and checking right angles. Consists of a ruler that slides into a metal head at a right angle, forming an L-shape. Primarily used to check or mark right angles accurately. Ruler marked in metric (millimeters) for precise measurements of lengths, widths and depths. Depth gauge feature to measure the depth of holes, grooves or recesses accurately. Scriber tool used as a marking tool to create straight lines or parallel lines on the material. Spirit level on the head to determine if a surface is horizontal (level) or vertical (plumb) for checking the alignment of walls, shelves and other structures. Length of 300mm and can be used as try and mitre square. Ideal for woodworking, metalworking and general construction.
Steel combination square used for precise measurements, marking and checking right angles. Consists of a ruler that slides into a metal head at a right angle, forming an L-shape. Primarily used to check or mark right angles accurately. Ruler marked in metric (millimeters) for precise measurements of lengths, widths and depths. Depth gauge feature to measure the depth of holes, grooves or recesses accurately. Scriber tool used as a marking tool to create straight lines or parallel lines on the material. Spirit level on the head to determine if a surface is horizontal (level) or vertical (plumb) for checking the alignment of walls, shelves and other structures. Length of 300mm and can be used as try and mitre square. Ideal for woodworking, metalworking and general construction.
Steel combination square used for precise measurements, marking and checking right angles. Consists of a ruler that slides into a metal head at a right angle, forming an L-shape. Primarily used to check or mark right angles accurately. Ruler marked in metric (millimeters) for precise measurements of lengths, widths and depths. Depth gauge feature to measure the depth of holes, grooves or recesses accurately. Scriber tool used as a marking tool to create straight lines or parallel lines on the material. Spirit level on the head to determine if a surface is horizontal (level) or vertical (plumb) for checking the alignment of walls, shelves and other structures. Length of 300mm and can be used as try and mitre square. Ideal for woodworking, metalworking and general construction.
Steel combination square used for precise measurements, marking and checking right angles. Consists of a ruler that slides into a metal head at a right angle, forming an L-shape. Primarily used to check or mark right angles accurately. Ruler marked in metric (millimeters) for precise measurements of lengths, widths and depths. Depth gauge feature to measure the depth of holes, grooves or recesses accurately. Scriber tool used as a marking tool to create straight lines or parallel lines on the material. Spirit level on the head to determine if a surface is horizontal (level) or vertical (plumb) for checking the alignment of walls, shelves and other structures. Length of 300mm and can be used as try and mitre square. Ideal for woodworking, metalworking and general construction.
in 18 offers
The lowest price for Stanley 300mm Combination Square - 2-46-143 right now is $34.00 at Amazon.com.au, compared across 13 retailers.
The all-time low was $25.00 on 31 Oct 2025 — today's price is 36% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 9 June 2026.
