Starrett Weber Gauge Block Set 81 pcs Model RS81.A1, Steel, Certificated NIB Q Street Features a rotary selector dial

Features a rotary selector dial for different battery voltages and test ranges

and heel protectors

Comes with an integral lock but the key is long lost

The numbers on the templates indicate the letter height in thousandths of an inch

and it's got a nice build quality

Starrett Weber Gauge Block Set 81 pcs Model RS81.A1, Steel, Certificated NIB Q Street Features a rotary selector dialI am the original owner and I purchased it in 2001 and never used them on a job I bid and lost. These have been in my temperature controlled inspection room, unopened and unused for 25 years. System of Measurement Inch Shape Rectangle Gauge Block Grade 0 Number of Pieces 81 Manufacturer Model Number RS81. A1 Includes 19 blocks in sizes 0. 050" to 0. 950" in 0. 05" increments 49 blocks in sizes 0. 101" to 0. 149" in 0. 001" increments Four blocks in