Rectangular window on fuze body (digital numbers); 1–2 piece body; ‘bullseye’ on nose; no external striker features; wires possible; Extras: EMR, Static, W/T
Electric Time (ET)
Crimped or screwed-on cap; T-shaped fins on projectile/rifle grenade bodies; pressed-on or threaded cap; Extras: Piezo, EMR, Static
PIBD (Point Initiating Base Detonating) — Electric
Brass ring on fuze body (not on base); vent holes evenly spaced in fuze body; may have graduated time-setting ring; Extras: W/T
Powder Train Time (PTTF)
Time-setting rings; multi-piece construction; NO brass ring; NO emission holes; round window (analog numbers/clock face); Extras: C/S (Cocked Striker)
Mechanical Time (MT)
Plastic cap/radome; no brass ring; no vent holes; could have graduated/time rings; Extras: VT, EMR, Static, W/T
Variable Time (VT)
