Precision 90° angles made of natural granite (Master Squares) are reference tools used for measuring and checking perpendicularity (right angles) between surfaces or elements on machine tools, machine tables, CNC, and measuring instruments (CMM).
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Shape: Rectangular block.
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Dimensions: From 300×200×50 mm to 1000×500×120 mm.
- Complies with standards DIN 875 / DIN 876.
1 Year Warranty
Factory ULTRA Präzision
The ULTRA Präzision Messzeuge GmbH, headquartered in Glattbach, Germany, has been operating since 1888 and is one of the most historic companies in the field of precision instruments. The ULTRA Präzision offers a complete range of “Made in Germany” products, including gauges, dimensional standards, micrometers, calipers, and surface plates, as well as special inspection tools and molds manufactured according to customer drawings. Its solutions cover demanding applications in machining, automotive industry, aerospace, toolmaking, and laboratory metrology. With more than a century of experience and a consistent commitment to quality and technological development, ULTRA Präzision is a reference point in the manufacture of high-precision measuring instruments and standards.
Official Representation
Our company, TRIANTAFYLLOU K SIA E.E. is an official representative of ULTRA in Greece since 2014 and we can support the entire range of its catalog, which includes more than 10,000 different product codes and many options for custom products.

| SKU | Dimensions (mm) | Parallelism (μm) | Perpendicularity (μm) | Availability |
Price
+VAT
|
Cart
Quote
|
|---|---|---|---|---|---|---|
| 1603201 | 300x200x50 | 3 / 2.5 | 2.5 | 1 month |
+VAT
€1.711,00
|
|
| 1603202 | 400x250x60 | 3.5 / 3 | 2.5 | 1 month |
+VAT
€1.883,00
|
|
| 1603203 | 400x400x60 | 3.5 | 2.5 | 1 month |
+VAT
€2.226,00
|
|
| 1603204 | 500x500x80 | 4 | 3 | 1 month |
+VAT
€2.557,00
|
|
| 1603205 | 630x300x80 | 4.5 / 3 | 3 | 1 month |
+VAT
€3.530,00
|
|
| 1603206 | 630x630x80 | 4.5 | 3 | 1 month |
+VAT
€4.107,00
|
|
| 1603207 | 800x500x100 | 5 / 3.5 | 3.5 | 1 month |
+VAT
€4.539,00
|
|
| 1603208 | 800x800x100 | 5 | 3.5 | 1 month |
+VAT
€5.350,00
|
|
| 1603209 | 1000x500x100 | 6 / 4 | 4 | 1 month |
+VAT
€5.908,00
|
|
| 1603210 | 1000x1000x100 | 6 | 4 | 1 month |
+VAT
€9.753,00
|
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