MEASURE IT !
5mx25mm Measuring tape & Stainless steel Measuring block, Model : Measure mate, Ref. 310.004Y
Click here for more pics & specifications :https://www.toolvizion.com/product/310-004y/
Click here to see the full compact measuring tape program :
https://www.toolvizion.com/product-category/products/measuring-2/compact-measuring-tapes/