MODEL 2640 SERIES 7/8 Diameter Analog Turns Counting Dial MODEL 2646 2647 2641 Counting Capacity, Maximum Turns 20 15 For Shaft Diameter 1/4 1/8 For Bushing Diameter 3/8 1/4 Depth: Maximum, From Face of Panel 0.900 0.82 Shaft Extension: Maximum, From Face of Panel 0.781 0.672 Minimum, From Face of Panel 0.628 0.469 Bushing Extension: Maximum, From Face of Panel 0.300 0.270 Locking Mechanism Positive Action with Detent Positive Action Weight, Nominal 0.60 oz. Number of Set Screws 1 2 1 Numeral Height 0.050 Knob Material Black Plastic Dial Finish White Numerals on Black Matte Housing Finish Satin Chrome Operating Temperature Range 55C to +71C 2646S 2647S Counting Capacity, Maximum Turns 15 For Shaft Diameter 1/4 For Bushing Diameter 3/8 Depth: Maximum, From Face of Panel 0.94 Shaft Extension: Maximum, From Face of Panel 0.781 Minimum, From Face of Panel 0.578 Bushing Extension: Maximum, From Face of Panel 0.300 Locking Mechanism Positive Action Weight, Nominal 0.60 oz. Number of Set Screws 1 2 Numeral Height 0.050 Knob Material Black Plastic Dial Finish White Numerals on Black Matte Housing Finish Satin Chrome Operating Temperature Range 55C to +71C 3-10 Model 2640 Series8 0 90 0 10 20 OUTLINE DIMENSIONS (Inch/mm) Nominal 2646 Mounting Surface Panel Hole Dimensions 2647 .90.02 Model Dim.A Dim.B 22.90.5 .281 .281 2601 7.14 7.14 Adaptor .496.010 .138 Plate 2606,2607, .406 .375 .58 Dia. 3.51 12.60.25 Max. (if needed) 2606S&2607S 10.3 9.53 14.7 0 0 605 A Dia. 3 9 Min. .94 2641 Mounting Surface Max. 23.88 2646S .82 2647S Max. 20.8 Max. Brake on 2601 B Lever Travel +.0005 .53.02 .375 .875.016 -.0000 Dia. 13.460.51 22.220.406 +0.127 9.525 .078 Dia. -0.000 Dia. 1.98 Locating* Plate *Model 2641 supplied with locating washer instead of locating plate. INCH mm Specifications subject to change without notice. 3-11 Model 2640 Series 30 40 60 5 0 40 5 0 60 40 50 60 70