Here is a Starrett salesman sample black granite surface plate. Size is 1 x 2 x 3". No longer available. Solid granite. Quite collectable.
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The Starrett Weber .05005 - 2.000 Gage Block Set is a precision gage block set in square shape, manufactured in the United States by the reputable brand Starrett. This gage block set is used for metalworking inspection and measurement, specifically for CNC and metalworking manufacturing processes. While the set may be incomplete, it still holds value for those seeking high-quality tools for their industrial measurement needs. Starrett gage blocks are known for their precision and reliability, making this set a desirable choice for professionals in the field.
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eBay
Machinist 7” Metal Try Square unbranded Looks like a Starrett no. 20 but appears to have been polished removing all markings. See photos decent shape.
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eBay
Starrett Master Precision Square, Model No. 20 24" Vintage
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This set includes 6 anvils and a long reach handle, and is provided in the original protective case for safe storage and transport.
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eBay