1-2-3 Blocks Gage Set Specifications and Features

The 123 blocks precision gage set measures approximately 1″ x 2″ x 3″ (L x W x H) and is made from hardened 45# steel. With a hardness rating of HRC 48-58, this set boasts an accuracy of 0.0002″ for height and parallelism. Available in quantities of 2 or 4, these blocks are perfect for any workshop.

• Hardened and precisely machined on all sides for reliable accuracy
• 23-hole design with 5 3/8″ 16UNC threaded holes and 18 untapped holes for flexible mounting
• Durable construction with no moving parts—lasts for years with proper care
• Suitable for setup, layout, inspection, and alignment verification tasks
• Essential tool for checking inside angles and verifying square accuracy

• Material: Hardened 45# Steel
• Hardness: HRC 48-58
• Dimension: Approx. 1″ x 2″ x 3″ (L x W x H) / 2.5cm x 5cm x 7.5cm
• Height Accuracy: 0.0002″
• Parallelism Accuracy: 0.0002″
• Shape: Square
• Type: Gage Block
• Colour: Silver

• Qty: 2 or 4 x 1-2-3 Blocks as per your selection