DrumDial Precision Drum Tuner Banjo Case and is manufactured with oxygen-free

and is manufactured with oxygen-free copper and braided shielding for quiet operation and lasting durability

The original specs from the 1986 Charvel/Jackson catalog:

The Reverb Time knob controls how long you hear the effect

Very useful when used in combination with the amplifiers drive channel (or any other drive pedal)

DrumDial Precision Drum Tuner Banjo Case and is manufactured with oxygen-freeDrum Tuning Just Got Easier! Timpani, snare drums, rack toms and bass drums are all easily tuned without even hitting the drum head. DrumDial does this by measuring Timpanic Pressure not tension rod torque. All drum users will appreciate the ability to accurately tune their drums, again and again, especially in loud environments. Standard Features Include: The DrumDial Edge Gage A locking bezel with moveable locators for easy marking of your tuning