|Accuracy Margin:||+/- 1/8 in.|
|Accuracy Margin Distance:||10 ft.|
|Effective Range (Visual):||20 ft.|
|Laser Diode:||650nm < 5mW|
|Operating Temperature (F):||50 - 104 Degrees|
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Q:I recently was given a BDL 190S from a friend and the unit is in a soft black zippered case. Upon opening the unit there are three spaces on the left side of the unit for accessories but the middle piece is missing. I have the key hole attachment on top and the dry wall pin attachment on the bottom but what goes in the center space and is there an item number for it?