For larger, heavier work. Blocks feature two clamping grooves. Lower 

grooves permit blocks to be clamped to table. 

• Made in numbered pairs from mild steel 

• Surfaces (except V) are square and parallel within .003 in 

• V-grooves are square and parallel with all surfaces within .002 in 

• V-groove is 90° ± 1/2° 

• V’s of pairs are central and parallel to each other within .004 in