These products targeted the photomasks and reticles used in integrated circuit manufacturing. Technologists choose from Photronics' reticles and photomasks for their micro-imaging platforms. Many modern reticles are designed for (stadiametric) rangefinding purposes. Spider web strands have been used for crosshairs or reticles in telescopes. A variety of monocular w/reticles are available from different manufacturers. Many telescopic sights used on rifles have reticles that are marked in mrad. Both wafers and reticles can be handled by SMIF pods in a semiconductor fabrication environment. Early reticles for the M16/M203 could not be zeroed for each weapon simultaneously. Some of the models are however also available with MOA/MOA configuration or SFP reticles. Variable-power telescopic sights with FFP reticles have no problems with point of impact shifts. It has caliber-specific reticles that are illuminated for use in low-light. In the more expensive and high-end contemporary telescopic sights, etched reticles dominate the market. The sight reticles were subsequently modified, requiring only 2 rounds for seating purposes. In surveying, reticles are designed for specific uses. Levels and theodolites would have slightly different reticles.