TQ + Computing R & W Portable Transmission densitometer  Density measurement to 6.00D in a compact, affordable unit. The battery operated TQ+ provides all the information required to calibrate imagestters and verify screen tints. read density, density difference, and positive or negative dot area of film images and control strips. The unit measures up tp 6.00D with rock-solid accuracy and stability. Newly developed, the TQ+ offers many innovative practical features such as easy software calibration and a tapered sensor head for maximum samplevisibility and quick postioning. Typical applications: DTP Imagesetters - Monitor output quality and linearity. Colour seperations - Verify screen ranges. Camera Department - Control film processor chemistry. Stripping department - Compute dot area. Photographic Masking - Monitor masks and seperations. TQ+ Features: Cordless Poratability - Take readings anywhere. Automatic Light Table - Illuminates when sample is positioned; inscribed crosshairs ensure accurate sample positioning. Smart Charger - Charges in only four hours; automatically switches to trickle charge when batteries are recharged. RS-232 serial Port - Use with a printer for hard copy with a computer analysis or storage.