Precision Sterl Half-Circular Block Set, Metric Sizes

Skylarc Ref U141061

Expected Auction End Time: 9th April 2023 9:31pm

Precision Sterl Half-Circular Block Set.
Unsure as to what type of set this is or its purpose. Comprised of 27x individual steel blocks wirh half-circle profile. Each block is 25mm wide, 12mm high.
Blocks come in the following lengths:
- 3x 10mm
- 4x 15mm
- 12x 20mm
- 4x 25mm
- 4x 40mm

Includes wood case with plexiglass cover held on with screws.
Age of set is unknown.
Blocks and case interior are excellent condition. Exterior of wood case and plexiglass cover shows mote moderate workshop storage wear.